Update zlib to 1.2.13

92 files changed, 1550 insertions, 917 deletions

diff --git a/zlib/CMakeLists.txt b/zlib/CMakeLists.txt
index e6fbb37d1..b412dc7fe 100644
--- a/zlib/CMakeLists.txt
+++ b/zlib/CMakeLists.txt
@@ -3,10 +3,7 @@ set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
 
 project(zlib C)
 
-set(VERSION "1.2.12")
-
-option(ASM686 "Enable building i686 assembly implementation")
-option(AMD64 "Enable building amd64 assembly implementation")
+set(VERSION "1.2.13")
 
 set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables")
 set(INSTALL_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Installation directory for libraries")
@@ -129,39 +126,6 @@ if(NOT MINGW)
     )
 endif()
 
-if(CMAKE_COMPILER_IS_GNUCC)
-    if(ASM686)
-        set(ZLIB_ASMS contrib/asm686/match.S)
-    elseif (AMD64)
-        set(ZLIB_ASMS contrib/amd64/amd64-match.S)
-    endif ()
-
-	if(ZLIB_ASMS)
-		add_definitions(-DASMV)
-		set_source_files_properties(${ZLIB_ASMS} PROPERTIES LANGUAGE C COMPILE_FLAGS -DNO_UNDERLINE)
-	endif()
-endif()
-
-if(MSVC)
-    if(ASM686)
-		ENABLE_LANGUAGE(ASM_MASM)
-        set(ZLIB_ASMS
-			contrib/masmx86/inffas32.asm
-			contrib/masmx86/match686.asm
-		)
-    elseif (AMD64)
-		ENABLE_LANGUAGE(ASM_MASM)
-        set(ZLIB_ASMS
-			contrib/masmx64/gvmat64.asm
-			contrib/masmx64/inffasx64.asm
-		)
-    endif()
-
-	if(ZLIB_ASMS)
-		add_definitions(-DASMV -DASMINF)
-	endif()
-endif()
-
 # parse the full version number from zlib.h and include in ZLIB_FULL_VERSION
 file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib.h _zlib_h_contents)
 string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*"
@@ -183,8 +147,8 @@ if(MINGW)
     set(ZLIB_DLL_SRCS ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
 endif(MINGW)
 
-add_library(zlib SHARED ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
-add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
+add_library(zlib SHARED ${ZLIB_SRCS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
+add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
 set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
 set_target_properties(zlib PROPERTIES SOVERSION 1)
 
diff --git a/zlib/ChangeLog b/zlib/ChangeLog
index f0b0e6180..457526bc6 100644
--- a/zlib/ChangeLog
+++ b/zlib/ChangeLog
@@ -1,6 +1,18 @@
 
                 ChangeLog file for zlib
 
+Changes in 1.2.13 (13 Oct 2022)
+- Fix configure issue that discarded provided CC definition
+- Correct incorrect inputs provided to the CRC functions
+- Repair prototypes and exporting of new CRC functions
+- Fix inflateBack to detect invalid input with distances too far
+- Have infback() deliver all of the available output up to any error
+- Fix a bug when getting a gzip header extra field with inflate()
+- Fix bug in block type selection when Z_FIXED used
+- Tighten deflateBound bounds
+- Remove deleted assembler code references
+- Various portability and appearance improvements
+
 Changes in 1.2.12 (27 Mar 2022)
 - Cygwin does not have _wopen(), so do not create gzopen_w() there
 - Permit a deflateParams() parameter change as soon as possible
@@ -159,7 +171,7 @@ Changes in 1.2.7.1 (24 Mar 2013)
 - Fix types in contrib/minizip to match result of get_crc_table()
 - Simplify contrib/vstudio/vc10 with 'd' suffix
 - Add TOP support to win32/Makefile.msc
-- Suport i686 and amd64 assembler builds in CMakeLists.txt
+- Support i686 and amd64 assembler builds in CMakeLists.txt
 - Fix typos in the use of _LARGEFILE64_SOURCE in zconf.h
 - Add vc11 and vc12 build files to contrib/vstudio
 - Add gzvprintf() as an undocumented function in zlib
@@ -359,14 +371,14 @@ Changes in 1.2.5.1 (10 Sep 2011)
 - Use u4 type for crc_table to avoid conversion warnings
 - Apply casts in zlib.h to avoid conversion warnings
 - Add OF to prototypes for adler32_combine_ and crc32_combine_ [Miller]
-- Improve inflateSync() documentation to note indeterminancy
+- Improve inflateSync() documentation to note indeterminacy
 - Add deflatePending() function to return the amount of pending output
 - Correct the spelling of "specification" in FAQ [Randers-Pehrson]
 - Add a check in configure for stdarg.h, use for gzprintf()
 - Check that pointers fit in ints when gzprint() compiled old style
 - Add dummy name before $(SHAREDLIBV) in Makefile [Bar-Lev, Bowler]
 - Delete line in configure that adds -L. libz.a to LDFLAGS [Weigelt]
-- Add debug records in assmebler code [Londer]
+- Add debug records in assembler code [Londer]
 - Update RFC references to use http://tools.ietf.org/html/... [Li]
 - Add --archs option, use of libtool to configure for Mac OS X [Borstel]
 
@@ -1033,7 +1045,7 @@ Changes in 1.2.0.1 (17 March 2003)
     - Include additional header file on VMS for off_t typedef
 - Try to use _vsnprintf where it supplants vsprintf [Vollant]
 - Add some casts in inffast.c
-- Enchance comments in zlib.h on what happens if gzprintf() tries to
+- Enhance comments in zlib.h on what happens if gzprintf() tries to
   write more than 4095 bytes before compression
 - Remove unused state from inflateBackEnd()
 - Remove exit(0) from minigzip.c, example.c
@@ -1211,7 +1223,7 @@ Changes in 1.0.9 (17 Feb 1998)
 - Avoid gcc 2.8.0 comparison bug a little differently than zlib 1.0.8
 - in inftrees.c, avoid cc -O bug on HP (Farshid Elahi)
 - in zconf.h move the ZLIB_DLL stuff earlier to avoid problems with
-  the declaration of FAR (Gilles VOllant)
+  the declaration of FAR (Gilles Vollant)
 - install libz.so* with mode 755 (executable) instead of 644 (Marc Lehmann)
 - read_buf buf parameter of type Bytef* instead of charf*
 - zmemcpy parameters are of type Bytef*, not charf* (Joseph Strout)
@@ -1567,7 +1579,7 @@ Changes in 0.4:
 - renamed deflateOptions as deflateInit2, call one or the other but not both
 - added the method parameter for deflateInit2
 - added inflateInit2
-- simplied considerably deflateInit and inflateInit by not supporting
+- simplified considerably deflateInit and inflateInit by not supporting
   user-provided history buffer. This is supported only in deflateInit2
   and inflateInit2
 
diff --git a/zlib/LICENSE b/zlib/LICENSE
new file mode 100644
index 000000000..ab8ee6f71
--- /dev/null
+++ b/zlib/LICENSE
@@ -0,0 +1,22 @@
+Copyright notice:
+
+ (C) 1995-2022 Jean-loup Gailly and Mark Adler
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Jean-loup Gailly        Mark Adler
+  jloup@gzip.org          madler@alumni.caltech.edu
diff --git a/zlib/Makefile.in b/zlib/Makefile.in
index 3d858aa3a..7d2713f4c 100644
--- a/zlib/Makefile.in
+++ b/zlib/Makefile.in
@@ -7,10 +7,6 @@
 # Normally configure builds both a static and a shared library.
 # If you want to build just a static library, use: ./configure --static
 
-# To use the asm code, type:
-#    cp contrib/asm?86/match.S ./match.S
-#    make LOC=-DASMV OBJA=match.o
-
 # To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
 #    make install
 # To install in $HOME instead of /usr/local, use:
@@ -26,13 +22,13 @@ CFLAGS=-O
 
 SFLAGS=-O
 LDFLAGS=
-TEST_LDFLAGS=-L. libz.a
+TEST_LDFLAGS=$(LDFLAGS) -L. libz.a
 LDSHARED=$(CC)
 CPP=$(CC) -E
 
 STATICLIB=libz.a
 SHAREDLIB=libz.so
-SHAREDLIBV=libz.so.1.2.12
+SHAREDLIBV=libz.so.1.2.13
 SHAREDLIBM=libz.so.1
 LIBS=$(STATICLIB) $(SHAREDLIBV)
 
@@ -87,7 +83,7 @@ test: all teststatic testshared
 
 teststatic: static
 	@TMPST=tmpst_$$; \
-	if echo hello world | ./minigzip | ./minigzip -d && ./example $$TMPST ; then \
+	if echo hello world | ${QEMU_RUN} ./minigzip | ${QEMU_RUN} ./minigzip -d && ${QEMU_RUN} ./example $$TMPST ; then \
 	  echo '		*** zlib test OK ***'; \
 	else \
 	  echo '		*** zlib test FAILED ***'; false; \
@@ -100,7 +96,7 @@ testshared: shared
 	DYLD_LIBRARY_PATH=`pwd`:$(DYLD_LIBRARY_PATH) ; export DYLD_LIBRARY_PATH; \
 	SHLIB_PATH=`pwd`:$(SHLIB_PATH) ; export SHLIB_PATH; \
 	TMPSH=tmpsh_$$; \
-	if echo hello world | ./minigzipsh | ./minigzipsh -d && ./examplesh $$TMPSH; then \
+	if echo hello world | ${QEMU_RUN} ./minigzipsh | ${QEMU_RUN} ./minigzipsh -d && ${QEMU_RUN} ./examplesh $$TMPSH; then \
 	  echo '		*** zlib shared test OK ***'; \
 	else \
 	  echo '		*** zlib shared test FAILED ***'; false; \
@@ -109,7 +105,7 @@ testshared: shared
 
 test64: all64
 	@TMP64=tmp64_$$; \
-	if echo hello world | ./minigzip64 | ./minigzip64 -d && ./example64 $$TMP64; then \
+	if echo hello world | ${QEMU_RUN} ./minigzip64 | ${QEMU_RUN} ./minigzip64 -d && ${QEMU_RUN} ./example64 $$TMP64; then \
 	  echo '		*** zlib 64-bit test OK ***'; \
 	else \
 	  echo '		*** zlib 64-bit test FAILED ***'; false; \
@@ -124,7 +120,7 @@ infcover: infcover.o libz.a
 
 cover: infcover
 	rm -f *.gcda
-	./infcover
+	${QEMU_RUN} ./infcover
 	gcov inf*.c
 
 libz.a: $(OBJS)
@@ -292,10 +288,10 @@ minigzip$(EXE): minigzip.o $(STATICLIB)
 	$(CC) $(CFLAGS) -o $@ minigzip.o $(TEST_LDFLAGS)
 
 examplesh$(EXE): example.o $(SHAREDLIBV)
-	$(CC) $(CFLAGS) -o $@ example.o -L. $(SHAREDLIBV)
+	$(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS) -L. $(SHAREDLIBV)
 
 minigzipsh$(EXE): minigzip.o $(SHAREDLIBV)
-	$(CC) $(CFLAGS) -o $@ minigzip.o -L. $(SHAREDLIBV)
+	$(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS) -L. $(SHAREDLIBV)
 
 example64$(EXE): example64.o $(STATICLIB)
 	$(CC) $(CFLAGS) -o $@ example64.o $(TEST_LDFLAGS)
diff --git a/zlib/README b/zlib/README
index 024b79d3d..ba34d1894 100644
--- a/zlib/README
+++ b/zlib/README
@@ -1,6 +1,6 @@
 ZLIB DATA COMPRESSION LIBRARY
 
-zlib 1.2.12 is a general purpose data compression library.  All the code is
+zlib 1.2.13 is a general purpose data compression library.  All the code is
 thread safe.  The data format used by the zlib library is described by RFCs
 (Request for Comments) 1950 to 1952 in the files
 http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
@@ -31,7 +31,7 @@ Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan.  1997
 issue of Dr.  Dobb's Journal; a copy of the article is available at
 http://marknelson.us/1997/01/01/zlib-engine/ .
 
-The changes made in version 1.2.12 are documented in the file ChangeLog.
+The changes made in version 1.2.13 are documented in the file ChangeLog.
 
 Unsupported third party contributions are provided in directory contrib/ .
 
diff --git a/zlib/compress.c b/zlib/compress.c
index e2db404ab..2ad5326c1 100644
--- a/zlib/compress.c
+++ b/zlib/compress.c
@@ -19,7 +19,7 @@
    memory, Z_BUF_ERROR if there was not enough room in the output buffer,
    Z_STREAM_ERROR if the level parameter is invalid.
 */
-int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
+int ZEXPORT compress2(dest, destLen, source, sourceLen, level)
     Bytef *dest;
     uLongf *destLen;
     const Bytef *source;
@@ -65,7 +65,7 @@ int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
 
 /* ===========================================================================
  */
-int ZEXPORT compress (dest, destLen, source, sourceLen)
+int ZEXPORT compress(dest, destLen, source, sourceLen)
     Bytef *dest;
     uLongf *destLen;
     const Bytef *source;
@@ -78,7 +78,7 @@ int ZEXPORT compress (dest, destLen, source, sourceLen)
      If the default memLevel or windowBits for deflateInit() is changed, then
    this function needs to be updated.
  */
-uLong ZEXPORT compressBound (sourceLen)
+uLong ZEXPORT compressBound(sourceLen)
     uLong sourceLen;
 {
     return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
diff --git a/zlib/configure b/zlib/configure
new file mode 100755
index 000000000..fa4d5daab
--- /dev/null
+++ b/zlib/configure
@@ -0,0 +1,922 @@
+#!/bin/sh
+# configure script for zlib.
+#
+# Normally configure builds both a static and a shared library.
+# If you want to build just a static library, use: ./configure --static
+#
+# To impose specific compiler or flags or install directory, use for example:
+#    prefix=$HOME CC=cc CFLAGS="-O4" ./configure
+# or for csh/tcsh users:
+#    (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure)
+
+# Incorrect settings of CC or CFLAGS may prevent creating a shared library.
+# If you have problems, try without defining CC and CFLAGS before reporting
+# an error.
+
+# start off configure.log
+echo -------------------- >> configure.log
+echo $0 $* >> configure.log
+date >> configure.log
+
+# get source directory
+SRCDIR=`dirname $0`
+if test $SRCDIR = "."; then
+    ZINC=""
+    ZINCOUT="-I."
+    SRCDIR=""
+else
+    ZINC='-include zconf.h'
+    ZINCOUT='-I. -I$(SRCDIR)'
+    SRCDIR="$SRCDIR/"
+fi
+
+# set command prefix for cross-compilation
+if [ -n "${CHOST}" ]; then
+    uname=${CHOST}
+    mname=${CHOST}
+    CROSS_PREFIX="${CHOST}-"
+else
+    mname=`(uname -a || echo unknown) 2>/dev/null`
+fi
+
+# destination name for static library
+STATICLIB=libz.a
+
+# extract zlib version numbers from zlib.h
+VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < ${SRCDIR}zlib.h`
+VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\).*/\1/p' < ${SRCDIR}zlib.h`
+VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < ${SRCDIR}zlib.h`
+VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < ${SRCDIR}zlib.h`
+
+# establish commands for library building
+if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then
+    AR=${AR-"${CROSS_PREFIX}ar"}
+    test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
+else
+    AR=${AR-"ar"}
+    test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
+fi
+ARFLAGS=${ARFLAGS-"rc"}
+if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then
+    RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"}
+    test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log
+else
+    RANLIB=${RANLIB-"ranlib"}
+fi
+if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null || test $? -lt 126; then
+    NM=${NM-"${CROSS_PREFIX}nm"}
+    test -n "${CROSS_PREFIX}" && echo Using ${NM} | tee -a configure.log
+else
+    NM=${NM-"nm"}
+fi
+
+# set defaults before processing command line options
+LDCONFIG=${LDCONFIG-"ldconfig"}
+LDSHAREDLIBC="${LDSHAREDLIBC--lc}"
+ARCHS=
+prefix=${prefix-/usr/local}
+exec_prefix=${exec_prefix-'${prefix}'}
+libdir=${libdir-'${exec_prefix}/lib'}
+sharedlibdir=${sharedlibdir-'${libdir}'}
+includedir=${includedir-'${prefix}/include'}
+mandir=${mandir-'${prefix}/share/man'}
+shared_ext='.so'
+shared=1
+solo=0
+cover=0
+zprefix=0
+zconst=0
+build64=0
+gcc=0
+warn=0
+debug=0
+sanitize=0
+old_cc="$CC"
+old_cflags="$CFLAGS"
+OBJC='$(OBJZ) $(OBJG)'
+PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)'
+
+# leave this script, optionally in a bad way
+leave()
+{
+  if test "$*" != "0"; then
+    echo "** $0 aborting." | tee -a configure.log
+  fi
+  rm -f $test.[co] $test $test$shared_ext $test.gcno ./--version
+  echo -------------------- >> configure.log
+  echo >> configure.log
+  echo >> configure.log
+  exit $1
+}
+
+# process command line options
+while test $# -ge 1
+do
+case "$1" in
+    -h* | --help)
+      echo 'usage:' | tee -a configure.log
+      echo '  configure [--const] [--zprefix] [--prefix=PREFIX]  [--eprefix=EXPREFIX]' | tee -a configure.log
+      echo '    [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log
+      echo '    [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log
+        exit 0 ;;
+    -p*=* | --prefix=*) prefix=`echo $1 | sed 's/.*=//'`; shift ;;
+    -e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/.*=//'`; shift ;;
+    -l*=* | --libdir=*) libdir=`echo $1 | sed 's/.*=//'`; shift ;;
+    --sharedlibdir=*) sharedlibdir=`echo $1 | sed 's/.*=//'`; shift ;;
+    -i*=* | --includedir=*) includedir=`echo $1 | sed 's/.*=//'`;shift ;;
+    -u*=* | --uname=*) uname=`echo $1 | sed 's/.*=//'`;shift ;;
+    -p* | --prefix) prefix="$2"; shift; shift ;;
+    -e* | --eprefix) exec_prefix="$2"; shift; shift ;;
+    -l* | --libdir) libdir="$2"; shift; shift ;;
+    -i* | --includedir) includedir="$2"; shift; shift ;;
+    -s* | --shared | --enable-shared) shared=1; shift ;;
+    -t | --static) shared=0; shift ;;
+    --solo) solo=1; shift ;;
+    --cover) cover=1; shift ;;
+    -z* | --zprefix) zprefix=1; shift ;;
+    -6* | --64) build64=1; shift ;;
+    -a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;;
+    --sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;;
+    --localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;;
+    -c* | --const) zconst=1; shift ;;
+    -w* | --warn) warn=1; shift ;;
+    -d* | --debug) debug=1; shift ;;
+    --sanitize) sanitize=1; shift ;;
+    *)
+      echo "unknown option: $1" | tee -a configure.log
+      echo "$0 --help for help" | tee -a configure.log
+      leave 1;;
+    esac
+done
+
+# temporary file name
+test=ztest$$
+
+# put arguments in log, also put test file in log if used in arguments
+show()
+{
+  case "$*" in
+    *$test.c*)
+      echo === $test.c === >> configure.log
+      cat $test.c >> configure.log
+      echo === >> configure.log;;
+  esac
+  echo $* >> configure.log
+}
+
+# check for gcc vs. cc and set compile and link flags based on the system identified by uname
+cat > $test.c <<EOF
+extern int getchar();
+int hello() {return getchar();}
+EOF
+
+if test -z "$CC"; then
+  echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log
+  if ${CROSS_PREFIX}gcc -v >/dev/null 2>&1; then
+    cc=${CROSS_PREFIX}gcc
+  else
+    cc=${CROSS_PREFIX}cc
+  fi
+else
+  cc=${CC}
+fi
+
+case "$cc" in
+  *gcc*) gcc=1 ;;
+  *clang*) gcc=1 ;;
+esac
+case `$cc -v 2>&1` in
+  *gcc*) gcc=1 ;;
+  *clang*) gcc=1 ;;
+esac
+
+show $cc -c $test.c
+if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then
+  echo ... using gcc >> configure.log
+  CC="$cc"
+  CFLAGS="${CFLAGS--O3}"
+  SFLAGS="${CFLAGS--O3} -fPIC"
+  if test "$ARCHS"; then
+    CFLAGS="${CFLAGS} ${ARCHS}"
+    LDFLAGS="${LDFLAGS} ${ARCHS}"
+  fi
+  if test $build64 -eq 1; then
+    CFLAGS="${CFLAGS} -m64"
+    SFLAGS="${SFLAGS} -m64"
+  fi
+  if test "$warn" -eq 1; then
+    if test "$zconst" -eq 1; then
+      CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -DZLIB_CONST"
+    else
+      CFLAGS="${CFLAGS} -Wall -Wextra"
+    fi
+  fi
+  if test $sanitize -eq 1; then
+    CFLAGS="${CFLAGS} -g -fsanitize=address"
+  fi
+  if test $debug -eq 1; then
+    CFLAGS="${CFLAGS} -DZLIB_DEBUG"
+    SFLAGS="${SFLAGS} -DZLIB_DEBUG"
+  fi
+  if test -z "$uname"; then
+    uname=`(uname -s || echo unknown) 2>/dev/null`
+  fi
+  case "$uname" in
+  Linux* | linux* | *-linux* | GNU | GNU/* | solaris*)
+        case "$mname" in
+        *sparc*)
+            LDFLAGS="${LDFLAGS} -Wl,--no-warn-rwx-segments" ;;
+        esac
+        LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"} ;;
+  *BSD | *bsd* | DragonFly)
+        LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"}
+        LDCONFIG="ldconfig -m" ;;
+  CYGWIN* | Cygwin* | cygwin* | *-cygwin* | OS/2*)
+        EXE='.exe' ;;
+  MINGW* | mingw* | *-mingw*)
+        rm -f $test.[co] $test $test$shared_ext
+        echo "If this doesn't work for you, try win32/Makefile.gcc." | tee -a configure.log
+        LDSHARED=${LDSHARED-"$cc -shared"}
+        LDSHAREDLIBC=""
+        EXE='.exe' ;;
+  QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
+        # (alain.bonnefoy@icbt.com)
+        LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;;
+  HP-UX*)
+        LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
+        case `(uname -m || echo unknown) 2>/dev/null` in
+        ia64)
+            shared_ext='.so'
+            SHAREDLIB='libz.so' ;;
+        *)
+            shared_ext='.sl'
+            SHAREDLIB='libz.sl' ;;
+        esac ;;
+  AIX*)
+        LDFLAGS="${LDFLAGS} -Wl,-brtl" ;;
+  Darwin* | darwin* | *-darwin*)
+        shared_ext='.dylib'
+        SHAREDLIB=libz$shared_ext
+        SHAREDLIBV=libz.$VER$shared_ext
+        SHAREDLIBM=libz.$VER1$shared_ext
+        LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}
+        if libtool -V 2>&1 | grep Apple > /dev/null; then
+            AR="libtool"
+        else
+            AR="/usr/bin/libtool"
+        fi
+        ARFLAGS="-o" ;;
+  *)
+        LDSHARED=${LDSHARED-"$cc -shared"} ;;
+  esac
+else
+  # find system name and corresponding cc options
+  CC=${CC-cc}
+  gcc=0
+  echo ... using $CC >> configure.log
+  if test -z "$uname"; then
+    uname=`(uname -sr || echo unknown) 2>/dev/null`
+  fi
+  case "$uname" in
+  HP-UX*)    SFLAGS=${CFLAGS-"-O +z"}
+             CFLAGS=${CFLAGS-"-O"}
+#            LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
+             LDSHARED=${LDSHARED-"ld -b"}
+         case `(uname -m || echo unknown) 2>/dev/null` in
+         ia64)
+             shared_ext='.so'
+             SHAREDLIB='libz.so' ;;
+         *)
+             shared_ext='.sl'
+             SHAREDLIB='libz.sl' ;;
+         esac ;;
+  IRIX*)     SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
+             CFLAGS=${CFLAGS-"-ansi -O2"}
+             LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
+  OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
+             CFLAGS=${CFLAGS-"-O -std1"}
+             LDFLAGS="${LDFLAGS} -Wl,-rpath,."
+             LDSHARED=${LDSHARED-"cc -shared  -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;;
+  OSF1*)     SFLAGS=${CFLAGS-"-O -std1"}
+             CFLAGS=${CFLAGS-"-O -std1"}
+             LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
+  QNX*)      SFLAGS=${CFLAGS-"-4 -O"}
+             CFLAGS=${CFLAGS-"-4 -O"}
+             LDSHARED=${LDSHARED-"cc"}
+             RANLIB=${RANLIB-"true"}
+             AR="cc"
+             ARFLAGS="-A" ;;
+  SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
+             CFLAGS=${CFLAGS-"-O3"}
+             LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;;
+  SunOS\ 5* | solaris*)
+         LDSHARED=${LDSHARED-"cc -G -h libz$shared_ext.$VER1"}
+         SFLAGS=${CFLAGS-"-fast -KPIC"}
+         CFLAGS=${CFLAGS-"-fast"}
+         if test $build64 -eq 1; then
+             # old versions of SunPRO/Workshop/Studio don't support -m64,
+             # but newer ones do.  Check for it.
+             flag64=`$CC -flags | egrep -- '^-m64'`
+             if test x"$flag64" != x"" ; then
+                 CFLAGS="${CFLAGS} -m64"
+                 SFLAGS="${SFLAGS} -m64"
+             else
+                 case `(uname -m || echo unknown) 2>/dev/null` in
+                   i86*)
+                     SFLAGS="$SFLAGS -xarch=amd64"
+                     CFLAGS="$CFLAGS -xarch=amd64" ;;
+                   *)
+                     SFLAGS="$SFLAGS -xarch=v9"
+                     CFLAGS="$CFLAGS -xarch=v9" ;;
+                 esac
+             fi
+         fi
+         if test -n "$ZINC"; then
+             ZINC='-I- -I. -I$(SRCDIR)'
+         fi
+         ;;
+  SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
+             CFLAGS=${CFLAGS-"-O2"}
+             LDSHARED=${LDSHARED-"ld"} ;;
+  SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}
+             CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"}
+             LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;;
+  UNIX_System_V\ 4.2.0)
+             SFLAGS=${CFLAGS-"-KPIC -O"}
+             CFLAGS=${CFLAGS-"-O"}
+             LDSHARED=${LDSHARED-"cc -G"} ;;
+  UNIX_SV\ 4.2MP)
+             SFLAGS=${CFLAGS-"-Kconform_pic -O"}
+             CFLAGS=${CFLAGS-"-O"}
+             LDSHARED=${LDSHARED-"cc -G"} ;;
+  OpenUNIX\ 5)
+             SFLAGS=${CFLAGS-"-KPIC -O"}
+             CFLAGS=${CFLAGS-"-O"}
+             LDSHARED=${LDSHARED-"cc -G"} ;;
+  AIX*)  # Courtesy of dbakker@arrayasolutions.com
+             SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
+             CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
+             LDSHARED=${LDSHARED-"xlc -G"} ;;
+  # send working options for other systems to zlib@gzip.org
+  *)         SFLAGS=${CFLAGS-"-O"}
+             CFLAGS=${CFLAGS-"-O"}
+             LDSHARED=${LDSHARED-"cc -shared"} ;;
+  esac
+fi
+
+# destination names for shared library if not defined above
+SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
+SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
+SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
+
+echo >> configure.log
+
+# define functions for testing compiler and library characteristics and logging the results
+
+cat > $test.c <<EOF
+#error error
+EOF
+if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
+  try()
+  {
+    show $*
+    test "`( $* ) 2>&1 | tee -a configure.log`" = ""
+  }
+  echo - using any output from compiler to indicate an error >> configure.log
+else
+  try()
+  {
+    show $*
+    got=`( $* ) 2>&1`
+    ret=$?
+    if test "$got" != ""; then
+      printf "%s\n" "$got" >> configure.log
+    fi
+    if test $ret -ne 0; then
+      echo "(exit code "$ret")" >> configure.log
+    fi
+    return $ret
+  }
+fi
+
+tryboth()
+{
+  show $*
+  got=`( $* ) 2>&1`
+  ret=$?
+  if test "$got" != ""; then
+    printf "%s\n" "$got" >> configure.log
+  fi
+  if test $ret -ne 0; then
+    echo "(exit code "$ret")" >> configure.log
+    return $ret
+  fi
+  test "$got" = ""
+}
+
+cat > $test.c << EOF
+int foo() { return 0; }
+EOF
+echo "Checking for obsessive-compulsive compiler options..." >> configure.log
+if try $CC -c $CFLAGS $test.c; then
+  :
+else
+  echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log
+  leave 1
+fi
+
+echo >> configure.log
+
+# see if shared library build supported
+cat > $test.c <<EOF
+extern int getchar();
+int hello() {return getchar();}
+EOF
+if test $shared -eq 1; then
+  echo Checking for shared library support... | tee -a configure.log
+  # we must test in two steps (cc then ld), required at least on SunOS 4.x
+  if try $CC -w -c $SFLAGS $test.c &&
+     try $LDSHARED $SFLAGS -o $test$shared_ext $test.o; then
+    echo Building shared library $SHAREDLIBV with $CC. | tee -a configure.log
+  elif test -z "$old_cc" -a -z "$old_cflags"; then
+    echo No shared library support. | tee -a configure.log
+    shared=0;
+  else
+    echo 'No shared library support; try without defining CC and CFLAGS' | tee -a configure.log
+    shared=0;
+  fi
+fi
+if test $shared -eq 0; then
+  LDSHARED="$CC"
+  ALL="static"
+  TEST="all teststatic"
+  SHAREDLIB=""
+  SHAREDLIBV=""
+  SHAREDLIBM=""
+  echo Building static library $STATICLIB version $VER with $CC. | tee -a configure.log
+else
+  ALL="static shared"
+  TEST="all teststatic testshared"
+fi
+
+echo >> configure.log
+
+# check for size_t
+cat > $test.c <<EOF
+#include <stdio.h>
+#include <stdlib.h>
+size_t dummy = 0;
+EOF
+if try $CC -c $CFLAGS $test.c; then
+  echo "Checking for size_t... Yes." | tee -a configure.log
+else
+  echo "Checking for size_t... No." | tee -a configure.log
+  # find a size_t integer type
+  # check for long long
+  cat > $test.c << EOF
+long long dummy = 0;
+EOF
+  if try $CC -c $CFLAGS $test.c; then
+    echo "Checking for long long... Yes." | tee -a configure.log
+    cat > $test.c <<EOF
+#include <stdio.h>
+int main(void) {
+    if (sizeof(void *) <= sizeof(int)) puts("int");
+    else if (sizeof(void *) <= sizeof(long)) puts("long");
+    else puts("z_longlong");
+    return 0;
+}
+EOF
+  else
+    echo "Checking for long long... No." | tee -a configure.log
+    cat > $test.c <<EOF
+#include <stdio.h>
+int main(void) {
+    if (sizeof(void *) <= sizeof(int)) puts("int");
+    else puts("long");
+    return 0;
+}
+EOF
+  fi
+  if try $CC $CFLAGS -o $test $test.c; then
+    sizet=`./$test`
+    echo "Checking for a pointer-size integer type..." $sizet"." | tee -a configure.log
+    CFLAGS="${CFLAGS} -DNO_SIZE_T=${sizet}"
+    SFLAGS="${SFLAGS} -DNO_SIZE_T=${sizet}"
+  else
+    echo "Checking for a pointer-size integer type... not found." | tee -a configure.log
+  fi
+fi
+
+echo >> configure.log
+
+# check for large file support, and if none, check for fseeko()
+cat > $test.c <<EOF
+#include <sys/types.h>
+off64_t dummy = 0;
+EOF
+if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then
+  CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1"
+  SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1"
+  ALL="${ALL} all64"
+  TEST="${TEST} test64"
+  echo "Checking for off64_t... Yes." | tee -a configure.log
+  echo "Checking for fseeko... Yes." | tee -a configure.log
+else
+  echo "Checking for off64_t... No." | tee -a configure.log
+  echo >> configure.log
+  cat > $test.c <<EOF
+#include <stdio.h>
+int main(void) {
+  fseeko(NULL, 0, 0);
+  return 0;
+}
+EOF
+  if try $CC $CFLAGS -o $test $test.c; then
+    echo "Checking for fseeko... Yes." | tee -a configure.log
+  else
+    CFLAGS="${CFLAGS} -DNO_FSEEKO"
+    SFLAGS="${SFLAGS} -DNO_FSEEKO"
+    echo "Checking for fseeko... No." | tee -a configure.log
+  fi
+fi
+
+echo >> configure.log
+
+# check for strerror() for use by gz* functions
+cat > $test.c <<EOF
+#include <string.h>
+#include <errno.h>
+int main() { return strlen(strerror(errno)); }
+EOF
+if try $CC $CFLAGS -o $test $test.c; then
+  echo "Checking for strerror... Yes." | tee -a configure.log
+else
+  CFLAGS="${CFLAGS} -DNO_STRERROR"
+  SFLAGS="${SFLAGS} -DNO_STRERROR"
+  echo "Checking for strerror... No." | tee -a configure.log
+fi
+
+# copy clean zconf.h for subsequent edits
+cp -p ${SRCDIR}zconf.h.in zconf.h
+
+echo >> configure.log
+
+# check for unistd.h and save result in zconf.h
+cat > $test.c <<EOF
+#include <unistd.h>
+int main() { return 0; }
+EOF
+if try $CC -c $CFLAGS $test.c; then
+  sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
+  mv zconf.temp.h zconf.h
+  echo "Checking for unistd.h... Yes." | tee -a configure.log
+else
+  echo "Checking for unistd.h... No." | tee -a configure.log
+fi
+
+echo >> configure.log
+
+# check for stdarg.h and save result in zconf.h
+cat > $test.c <<EOF
+#include <stdarg.h>
+int main() { return 0; }
+EOF
+if try $CC -c $CFLAGS $test.c; then
+  sed < zconf.h "/^#ifdef HAVE_STDARG_H.* may be/s/def HAVE_STDARG_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
+  mv zconf.temp.h zconf.h
+  echo "Checking for stdarg.h... Yes." | tee -a configure.log
+else
+  echo "Checking for stdarg.h... No." | tee -a configure.log
+fi
+
+# if the z_ prefix was requested, save that in zconf.h
+if test $zprefix -eq 1; then
+  sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h
+  mv zconf.temp.h zconf.h
+  echo >> configure.log
+  echo "Using z_ prefix on all symbols." | tee -a configure.log
+fi
+
+# if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists
+if test $solo -eq 1; then
+  sed '/#define ZCONF_H/a\
+#define Z_SOLO
+
+' < zconf.h > zconf.temp.h
+  mv zconf.temp.h zconf.h
+OBJC='$(OBJZ)'
+PIC_OBJC='$(PIC_OBJZ)'
+fi
+
+# if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X
+if test $cover -eq 1; then
+  CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage"
+  if test -n "$GCC_CLASSIC"; then
+    CC=$GCC_CLASSIC
+  fi
+fi
+
+echo >> configure.log
+
+# conduct a series of tests to resolve eight possible cases of using "vs" or "s" printf functions
+# (using stdarg or not), with or without "n" (proving size of buffer), and with or without a
+# return value.  The most secure result is vsnprintf() with a return value.  snprintf() with a
+# return value is secure as well, but then gzprintf() will be limited to 20 arguments.
+cat > $test.c <<EOF
+#include <stdio.h>
+#include <stdarg.h>
+#include "zconf.h"
+int main()
+{
+#ifndef STDC
+  choke me
+#endif
+  return 0;
+}
+EOF
+if try $CC -c $CFLAGS $test.c; then
+  echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()." | tee -a configure.log
+
+  echo >> configure.log
+  cat > $test.c <<EOF
+#include <stdio.h>
+#include <stdarg.h>
+int mytest(const char *fmt, ...)
+{
+  char buf[20];
+  va_list ap;
+  va_start(ap, fmt);
+  vsnprintf(buf, sizeof(buf), fmt, ap);
+  va_end(ap);
+  return 0;
+}
+int main()
+{
+  return (mytest("Hello%d\n", 1));
+}
+EOF
+  if try $CC $CFLAGS -o $test $test.c; then
+    echo "Checking for vsnprintf() in stdio.h... Yes." | tee -a configure.log
+
+    echo >> configure.log
+    cat >$test.c <<EOF
+#include <stdio.h>
+#include <stdarg.h>
+int mytest(const char *fmt, ...)
+{
+  int n;
+  char buf[20];
+  va_list ap;
+  va_start(ap, fmt);
+  n = vsnprintf(buf, sizeof(buf), fmt, ap);
+  va_end(ap);
+  return n;
+}
+int main()
+{
+  return (mytest("Hello%d\n", 1));
+}
+EOF
+
+    if try $CC -c $CFLAGS $test.c; then
+      echo "Checking for return value of vsnprintf()... Yes." | tee -a configure.log
+    else
+      CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
+      SFLAGS="$SFLAGS -DHAS_vsnprintf_void"
+      echo "Checking for return value of vsnprintf()... No." | tee -a configure.log
+      echo "  WARNING: apparently vsnprintf() does not return a value. zlib" | tee -a configure.log
+      echo "  can build but will be open to possible string-format security" | tee -a configure.log
+      echo "  vulnerabilities." | tee -a configure.log
+    fi
+  else
+    CFLAGS="$CFLAGS -DNO_vsnprintf"
+    SFLAGS="$SFLAGS -DNO_vsnprintf"
+    echo "Checking for vsnprintf() in stdio.h... No." | tee -a configure.log
+    echo "  WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" | tee -a configure.log
+    echo "  can build but will be open to possible buffer-overflow security" | tee -a configure.log
+    echo "  vulnerabilities." | tee -a configure.log
+
+    echo >> configure.log
+    cat >$test.c <<EOF
+#include <stdio.h>
+#include <stdarg.h>
+int mytest(const char *fmt, ...)
+{
+  int n;
+  char buf[20];
+  va_list ap;
+  va_start(ap, fmt);
+  n = vsprintf(buf, fmt, ap);
+  va_end(ap);
+  return n;
+}
+int main()
+{
+  return (mytest("Hello%d\n", 1));
+}
+EOF
+
+    if try $CC -c $CFLAGS $test.c; then
+      echo "Checking for return value of vsprintf()... Yes." | tee -a configure.log
+    else
+      CFLAGS="$CFLAGS -DHAS_vsprintf_void"
+      SFLAGS="$SFLAGS -DHAS_vsprintf_void"
+      echo "Checking for return value of vsprintf()... No." | tee -a configure.log
+      echo "  WARNING: apparently vsprintf() does not return a value. zlib" | tee -a configure.log
+      echo "  can build but will be open to possible string-format security" | tee -a configure.log
+      echo "  vulnerabilities." | tee -a configure.log
+    fi
+  fi
+else
+  echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." | tee -a configure.log
+
+  echo >> configure.log
+  cat >$test.c <<EOF
+#include <stdio.h>
+int mytest()
+{
+  char buf[20];
+  snprintf(buf, sizeof(buf), "%s", "foo");
+  return 0;
+}
+int main()
+{
+  return (mytest());
+}
+EOF
+
+  if try $CC $CFLAGS -o $test $test.c; then
+    echo "Checking for snprintf() in stdio.h... Yes." | tee -a configure.log
+
+    echo >> configure.log
+    cat >$test.c <<EOF
+#include <stdio.h>
+int mytest()
+{
+  char buf[20];
+  return snprintf(buf, sizeof(buf), "%s", "foo");
+}
+int main()
+{
+  return (mytest());
+}
+EOF
+
+    if try $CC -c $CFLAGS $test.c; then
+      echo "Checking for return value of snprintf()... Yes." | tee -a configure.log
+    else
+      CFLAGS="$CFLAGS -DHAS_snprintf_void"
+      SFLAGS="$SFLAGS -DHAS_snprintf_void"
+      echo "Checking for return value of snprintf()... No." | tee -a configure.log
+      echo "  WARNING: apparently snprintf() does not return a value. zlib" | tee -a configure.log
+      echo "  can build but will be open to possible string-format security" | tee -a configure.log
+      echo "  vulnerabilities." | tee -a configure.log
+    fi
+  else
+    CFLAGS="$CFLAGS -DNO_snprintf"
+    SFLAGS="$SFLAGS -DNO_snprintf"
+    echo "Checking for snprintf() in stdio.h... No." | tee -a configure.log
+    echo "  WARNING: snprintf() not found, falling back to sprintf(). zlib" | tee -a configure.log
+    echo "  can build but will be open to possible buffer-overflow security" | tee -a configure.log
+    echo "  vulnerabilities." | tee -a configure.log
+
+    echo >> configure.log
+    cat >$test.c <<EOF
+#include <stdio.h>
+int mytest()
+{
+  char buf[20];
+  return sprintf(buf, "%s", "foo");
+}
+int main()
+{
+  return (mytest());
+}
+EOF
+
+    if try $CC -c $CFLAGS $test.c; then
+      echo "Checking for return value of sprintf()... Yes." | tee -a configure.log
+    else
+      CFLAGS="$CFLAGS -DHAS_sprintf_void"
+      SFLAGS="$SFLAGS -DHAS_sprintf_void"
+      echo "Checking for return value of sprintf()... No." | tee -a configure.log
+      echo "  WARNING: apparently sprintf() does not return a value. zlib" | tee -a configure.log
+      echo "  can build but will be open to possible string-format security" | tee -a configure.log
+      echo "  vulnerabilities." | tee -a configure.log
+    fi
+  fi
+fi
+
+# see if we can hide zlib internal symbols that are linked between separate source files
+if test "$gcc" -eq 1; then
+  echo >> configure.log
+  cat > $test.c <<EOF
+#define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
+int ZLIB_INTERNAL foo;
+int main()
+{
+  return 0;
+}
+EOF
+  if tryboth $CC -c $CFLAGS $test.c; then
+    CFLAGS="$CFLAGS -DHAVE_HIDDEN"
+    SFLAGS="$SFLAGS -DHAVE_HIDDEN"
+    echo "Checking for attribute(visibility) support... Yes." | tee -a configure.log
+  else
+    echo "Checking for attribute(visibility) support... No." | tee -a configure.log
+  fi
+fi
+
+# show the results in the log
+echo >> configure.log
+echo ALL = $ALL >> configure.log
+echo AR = $AR >> configure.log
+echo ARFLAGS = $ARFLAGS >> configure.log
+echo CC = $CC >> configure.log
+echo CFLAGS = $CFLAGS >> configure.log
+echo CPP = $CPP >> configure.log
+echo EXE = $EXE >> configure.log
+echo LDCONFIG = $LDCONFIG >> configure.log
+echo LDFLAGS = $LDFLAGS >> configure.log
+echo LDSHARED = $LDSHARED >> configure.log
+echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log
+echo OBJC = $OBJC >> configure.log
+echo PIC_OBJC = $PIC_OBJC >> configure.log
+echo RANLIB = $RANLIB >> configure.log
+echo SFLAGS = $SFLAGS >> configure.log
+echo SHAREDLIB = $SHAREDLIB >> configure.log
+echo SHAREDLIBM = $SHAREDLIBM >> configure.log
+echo SHAREDLIBV = $SHAREDLIBV >> configure.log
+echo STATICLIB = $STATICLIB >> configure.log
+echo TEST = $TEST >> configure.log
+echo VER = $VER >> configure.log
+echo SRCDIR = $SRCDIR >> configure.log
+echo exec_prefix = $exec_prefix >> configure.log
+echo includedir = $includedir >> configure.log
+echo libdir = $libdir >> configure.log
+echo mandir = $mandir >> configure.log
+echo prefix = $prefix >> configure.log
+echo sharedlibdir = $sharedlibdir >> configure.log
+echo uname = $uname >> configure.log
+
+# udpate Makefile with the configure results
+sed < ${SRCDIR}Makefile.in "
+/^CC *=/s#=.*#=$CC#
+/^CFLAGS *=/s#=.*#=$CFLAGS#
+/^SFLAGS *=/s#=.*#=$SFLAGS#
+/^LDFLAGS *=/s#=.*#=$LDFLAGS#
+/^LDSHARED *=/s#=.*#=$LDSHARED#
+/^CPP *=/s#=.*#=$CPP#
+/^STATICLIB *=/s#=.*#=$STATICLIB#
+/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
+/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
+/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
+/^AR *=/s#=.*#=$AR#
+/^ARFLAGS *=/s#=.*#=$ARFLAGS#
+/^RANLIB *=/s#=.*#=$RANLIB#
+/^LDCONFIG *=/s#=.*#=$LDCONFIG#
+/^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC#
+/^EXE *=/s#=.*#=$EXE#
+/^SRCDIR *=/s#=.*#=$SRCDIR#
+/^ZINC *=/s#=.*#=$ZINC#
+/^ZINCOUT *=/s#=.*#=$ZINCOUT#
+/^prefix *=/s#=.*#=$prefix#
+/^exec_prefix *=/s#=.*#=$exec_prefix#
+/^libdir *=/s#=.*#=$libdir#
+/^sharedlibdir *=/s#=.*#=$sharedlibdir#
+/^includedir *=/s#=.*#=$includedir#
+/^mandir *=/s#=.*#=$mandir#
+/^OBJC *=/s#=.*#= $OBJC#
+/^PIC_OBJC *=/s#=.*#= $PIC_OBJC#
+/^all: */s#:.*#: $ALL#
+/^test: */s#:.*#: $TEST#
+" > Makefile
+
+# create zlib.pc with the configure results
+sed < ${SRCDIR}zlib.pc.in "
+/^CC *=/s#=.*#=$CC#
+/^CFLAGS *=/s#=.*#=$CFLAGS#
+/^CPP *=/s#=.*#=$CPP#
+/^LDSHARED *=/s#=.*#=$LDSHARED#
+/^STATICLIB *=/s#=.*#=$STATICLIB#
+/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
+/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
+/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
+/^AR *=/s#=.*#=$AR#
+/^ARFLAGS *=/s#=.*#=$ARFLAGS#
+/^RANLIB *=/s#=.*#=$RANLIB#
+/^EXE *=/s#=.*#=$EXE#
+/^prefix *=/s#=.*#=$prefix#
+/^exec_prefix *=/s#=.*#=$exec_prefix#
+/^libdir *=/s#=.*#=$libdir#
+/^sharedlibdir *=/s#=.*#=$sharedlibdir#
+/^includedir *=/s#=.*#=$includedir#
+/^mandir *=/s#=.*#=$mandir#
+/^LDFLAGS *=/s#=.*#=$LDFLAGS#
+" | sed -e "
+s/\@VERSION\@/$VER/g;
+" > zlib.pc
+
+# done
+leave 0
diff --git a/zlib/contrib/README.contrib b/zlib/contrib/README.contrib
index 335e43508..5e5f95054 100644
--- a/zlib/contrib/README.contrib
+++ b/zlib/contrib/README.contrib
@@ -1,4 +1,4 @@
-All files under this contrib directory are UNSUPPORTED. There were
+All files under this contrib directory are UNSUPPORTED. They were
 provided by users of zlib and were not tested by the authors of zlib.
 Use at your own risk. Please contact the authors of the contributions
 for help about these, not the zlib authors. Thanks.
diff --git a/zlib/contrib/delphi/ZLib.pas b/zlib/contrib/delphi/ZLib.pas
index d40dad8a1..8be5fa22c 100644
--- a/zlib/contrib/delphi/ZLib.pas
+++ b/zlib/contrib/delphi/ZLib.pas
@@ -152,7 +152,7 @@ procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
   const OutBuf: Pointer; BufSize: Integer);
 
 const
-  zlib_version = '1.2.12';
+  zlib_version = '1.2.13';
 
 type
   EZlibError = class(Exception);
diff --git a/zlib/contrib/dotzlib/DotZLib/UnitTests.cs b/zlib/contrib/dotzlib/DotZLib/UnitTests.cs
index 5fd0ae4dc..555543e25 100644
--- a/zlib/contrib/dotzlib/DotZLib/UnitTests.cs
+++ b/zlib/contrib/dotzlib/DotZLib/UnitTests.cs
@@ -156,7 +156,7 @@ namespace DotZLibTests
         public void Info_Version()
         {
             Info info = new Info();
-            Assert.AreEqual("1.2.12", Info.Version);
+            Assert.AreEqual("1.2.13", Info.Version);
             Assert.AreEqual(32, info.SizeOfUInt);
             Assert.AreEqual(32, info.SizeOfULong);
             Assert.AreEqual(32, info.SizeOfPointer);
diff --git a/zlib/contrib/infback9/inftree9.c b/zlib/contrib/infback9/inftree9.c
index 05506066c..10827a6aa 100644
--- a/zlib/contrib/infback9/inftree9.c
+++ b/zlib/contrib/infback9/inftree9.c
@@ -9,7 +9,7 @@
 #define MAXBITS 15
 
 const char inflate9_copyright[] =
-   " inflate9 1.2.12 Copyright 1995-2022 Mark Adler ";
+   " inflate9 1.2.13 Copyright 1995-2022 Mark Adler ";
 /*
   If you use the zlib library in a product, an acknowledgment is welcome
   in the documentation of your product. If for some reason you cannot
@@ -64,7 +64,7 @@ unsigned short FAR *work;
     static const unsigned short lext[31] = { /* Length codes 257..285 extra */
         128, 128, 128, 128, 128, 128, 128, 128, 129, 129, 129, 129,
         130, 130, 130, 130, 131, 131, 131, 131, 132, 132, 132, 132,
-        133, 133, 133, 133, 144, 199, 202};
+        133, 133, 133, 133, 144, 194, 65};
     static const unsigned short dbase[32] = { /* Distance codes 0..31 base */
         1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49,
         65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073,
diff --git a/zlib/contrib/infback9/inftree9.h b/zlib/contrib/infback9/inftree9.h
index 5ab21f0c6..3b394978e 100644
--- a/zlib/contrib/infback9/inftree9.h
+++ b/zlib/contrib/infback9/inftree9.h
@@ -38,7 +38,7 @@ typedef struct {
 /* Maximum size of the dynamic table.  The maximum number of code structures is
    1446, which is the sum of 852 for literal/length codes and 594 for distance
    codes.  These values were found by exhaustive searches using the program
-   examples/enough.c found in the zlib distribtution.  The arguments to that
+   examples/enough.c found in the zlib distribution.  The arguments to that
    program are the number of symbols, the initial root table size, and the
    maximum bit length of a code.  "enough 286 9 15" for literal/length codes
    returns returns 852, and "enough 32 6 15" for distance codes returns 594.
diff --git a/zlib/contrib/minizip/configure.ac b/zlib/contrib/minizip/configure.ac
index 6409abc89..bff300b30 100644
--- a/zlib/contrib/minizip/configure.ac
+++ b/zlib/contrib/minizip/configure.ac
@@ -1,7 +1,7 @@
 #                                               -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
-AC_INIT([minizip], [1.2.12], [bugzilla.redhat.com])
+AC_INIT([minizip], [1.2.13], [bugzilla.redhat.com])
 AC_CONFIG_SRCDIR([minizip.c])
 AM_INIT_AUTOMAKE([foreign])
 LT_INIT
diff --git a/zlib/contrib/minizip/crypt.h b/zlib/contrib/minizip/crypt.h
index 9da15373d..1cc41f19d 100644
--- a/zlib/contrib/minizip/crypt.h
+++ b/zlib/contrib/minizip/crypt.h
@@ -85,7 +85,7 @@ static void init_keys(const char* passwd,unsigned long* pkeys,const z_crc_t* pcr
 #define RAND_HEAD_LEN  12
    /* "last resort" source for second part of crypt seed pattern */
 #  ifndef ZCR_SEED2
-#    define ZCR_SEED2 3141592654L       /* use PI as default pattern */
+#    define ZCR_SEED2 3141592654UL      /* use PI as default pattern */
 #  endif
 
 static unsigned crypthead(const char* passwd,       /* password string */
diff --git a/zlib/contrib/minizip/ioapi.c b/zlib/contrib/minizip/ioapi.c
index d666e5a22..814a6fd38 100644
--- a/zlib/contrib/minizip/ioapi.c
+++ b/zlib/contrib/minizip/ioapi.c
@@ -94,9 +94,9 @@ static int     ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream));
 
 static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode)
 {
-    (void)opaque;
     FILE* file = NULL;
     const char* mode_fopen = NULL;
+    (void)opaque;
     if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
         mode_fopen = "rb";
     else
@@ -113,9 +113,9 @@ static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, in
 
 static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode)
 {
-    (void)opaque;
     FILE* file = NULL;
     const char* mode_fopen = NULL;
+    (void)opaque;
     if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
         mode_fopen = "rb";
     else
@@ -133,24 +133,24 @@ static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename,
 
 static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size)
 {
-    (void)opaque;
     uLong ret;
+    (void)opaque;
     ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
     return ret;
 }
 
 static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size)
 {
-    (void)opaque;
     uLong ret;
+    (void)opaque;
     ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
     return ret;
 }
 
 static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream)
 {
-    (void)opaque;
     long ret;
+    (void)opaque;
     ret = ftell((FILE *)stream);
     return ret;
 }
@@ -158,17 +158,17 @@ static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream)
 
 static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream)
 {
-    (void)opaque;
     ZPOS64_T ret;
+    (void)opaque;
     ret = (ZPOS64_T)FTELLO_FUNC((FILE *)stream);
     return ret;
 }
 
 static long ZCALLBACK fseek_file_func (voidpf  opaque, voidpf stream, uLong offset, int origin)
 {
-    (void)opaque;
     int fseek_origin=0;
     long ret;
+    (void)opaque;
     switch (origin)
     {
     case ZLIB_FILEFUNC_SEEK_CUR :
@@ -190,9 +190,9 @@ static long ZCALLBACK fseek_file_func (voidpf  opaque, voidpf stream, uLong offs
 
 static long ZCALLBACK fseek64_file_func (voidpf  opaque, voidpf stream, ZPOS64_T offset, int origin)
 {
-    (void)opaque;
     int fseek_origin=0;
     long ret;
+    (void)opaque;
     switch (origin)
     {
     case ZLIB_FILEFUNC_SEEK_CUR :
@@ -208,7 +208,7 @@ static long ZCALLBACK fseek64_file_func (voidpf  opaque, voidpf stream, ZPOS64_T
     }
     ret = 0;
 
-    if(FSEEKO_FUNC((FILE *)stream, (long)offset, fseek_origin) != 0)
+    if(FSEEKO_FUNC((FILE *)stream, (z_off_t)offset, fseek_origin) != 0)
                         ret = -1;
 
     return ret;
@@ -217,16 +217,16 @@ static long ZCALLBACK fseek64_file_func (voidpf  opaque, voidpf stream, ZPOS64_T
 
 static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream)
 {
-    (void)opaque;
     int ret;
+    (void)opaque;
     ret = fclose((FILE *)stream);
     return ret;
 }
 
 static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream)
 {
-    (void)opaque;
     int ret;
+    (void)opaque;
     ret = ferror((FILE *)stream);
     return ret;
 }
diff --git a/zlib/contrib/minizip/ioapi.h b/zlib/contrib/minizip/ioapi.h
index 114bfab76..ae9ca7e83 100644
--- a/zlib/contrib/minizip/ioapi.h
+++ b/zlib/contrib/minizip/ioapi.h
@@ -50,7 +50,7 @@
 #define ftello64 ftell
 #define fseeko64 fseek
 #else
-#ifdef __FreeBSD__
+#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
 #define fopen64 fopen
 #define ftello64 ftello
 #define fseeko64 fseeko
diff --git a/zlib/contrib/minizip/iowin32.c b/zlib/contrib/minizip/iowin32.c
index 274f39eb1..7df525172 100644
--- a/zlib/contrib/minizip/iowin32.c
+++ b/zlib/contrib/minizip/iowin32.c
@@ -28,6 +28,11 @@
 
 // see Include/shared/winapifamily.h in the Windows Kit
 #if defined(WINAPI_FAMILY_PARTITION) && (!(defined(IOWIN32_USING_WINRT_API)))
+
+#if !defined(WINAPI_FAMILY_ONE_PARTITION)
+#define WINAPI_FAMILY_ONE_PARTITION(PartitionSet, Partition) ((WINAPI_FAMILY & PartitionSet) == Partition)
+#endif
+
 #if WINAPI_FAMILY_ONE_PARTITION(WINAPI_FAMILY, WINAPI_PARTITION_APP)
 #define IOWIN32_USING_WINRT_API 1
 #endif
diff --git a/zlib/contrib/minizip/miniunz.c b/zlib/contrib/minizip/miniunz.c
index f103815ef..0dc9b5081 100644
--- a/zlib/contrib/minizip/miniunz.c
+++ b/zlib/contrib/minizip/miniunz.c
@@ -564,7 +564,7 @@ int main(argc,argv)
 
                 while ((*p)!='\0')
                 {
-                    char c=*(p++);;
+                    char c=*(p++);
                     if ((c=='l') || (c=='L'))
                         opt_do_list = 1;
                     if ((c=='v') || (c=='V'))
diff --git a/zlib/contrib/minizip/minizip.c b/zlib/contrib/minizip/minizip.c
index 7f937aa5b..e8561b15f 100644
--- a/zlib/contrib/minizip/minizip.c
+++ b/zlib/contrib/minizip/minizip.c
@@ -190,7 +190,7 @@ static int getFileCrc(const char* filenameinzip,void*buf,unsigned long size_buf,
    FILE * fin = FOPEN_FUNC(filenameinzip,"rb");
 
    unsigned long size_read = 0;
-   unsigned long total_read = 0;
+   /* unsigned long total_read = 0; */
    if (fin==NULL)
    {
        err = ZIP_ERRNO;
@@ -210,7 +210,7 @@ static int getFileCrc(const char* filenameinzip,void*buf,unsigned long size_buf,
 
             if (size_read>0)
                 calculate_crc = crc32_z(calculate_crc,buf,size_read);
-            total_read += size_read;
+            /* total_read += size_read; */
 
         } while ((err == ZIP_OK) && (size_read>0));
 
@@ -277,7 +277,7 @@ int main(argc,argv)
 
                 while ((*p)!='\0')
                 {
-                    char c=*(p++);;
+                    char c=*(p++);
                     if ((c=='o') || (c=='O'))
                         opt_overwrite = 1;
                     if ((c=='a') || (c=='A'))
diff --git a/zlib/contrib/minizip/unzip.c b/zlib/contrib/minizip/unzip.c
index 5e12e4747..3036b470b 100644
--- a/zlib/contrib/minizip/unzip.c
+++ b/zlib/contrib/minizip/unzip.c
@@ -112,7 +112,7 @@
 # define ALLOC(size) (malloc(size))
 #endif
 #ifndef TRYFREE
-# define TRYFREE(p) {if (p) free(p);}
+# define TRYFREE(p) { free(p);}
 #endif
 
 #define SIZECENTRALDIRITEM (0x2e)
@@ -1566,6 +1566,7 @@ extern int ZEXPORT unzOpenCurrentFile3 (unzFile file, int* method,
         pfile_in_zip_read_info->stream_initialised=Z_BZIP2ED;
       else
       {
+        TRYFREE(pfile_in_zip_read_info->read_buffer);
         TRYFREE(pfile_in_zip_read_info);
         return err;
       }
@@ -1586,6 +1587,7 @@ extern int ZEXPORT unzOpenCurrentFile3 (unzFile file, int* method,
         pfile_in_zip_read_info->stream_initialised=Z_DEFLATED;
       else
       {
+        TRYFREE(pfile_in_zip_read_info->read_buffer);
         TRYFREE(pfile_in_zip_read_info);
         return err;
       }
diff --git a/zlib/contrib/minizip/zip.c b/zlib/contrib/minizip/zip.c
index 4e611e116..66d693f85 100644
--- a/zlib/contrib/minizip/zip.c
+++ b/zlib/contrib/minizip/zip.c
@@ -1471,11 +1471,6 @@ extern int ZEXPORT zipWriteInFileInZip (zipFile file,const void* buf,unsigned in
           {
               uLong uTotalOutBefore = zi->ci.stream.total_out;
               err=deflate(&zi->ci.stream,  Z_NO_FLUSH);
-              if(uTotalOutBefore > zi->ci.stream.total_out)
-              {
-                int bBreak = 0;
-                bBreak++;
-              }
 
               zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
           }
@@ -1959,7 +1954,7 @@ extern int ZEXPORT zipRemoveExtraInfoBlock (char* pData, int* dataLen, short sHe
 
   int retVal = ZIP_OK;
 
-  if(pData == NULL || *dataLen < 4)
+  if(pData == NULL || dataLen == NULL || *dataLen < 4)
     return ZIP_PARAMERROR;
 
   pNewHeader = (char*)ALLOC((unsigned)*dataLen);
diff --git a/zlib/contrib/pascal/zlibpas.pas b/zlib/contrib/pascal/zlibpas.pas
index adb5cd60b..bf3fff6ff 100644
--- a/zlib/contrib/pascal/zlibpas.pas
+++ b/zlib/contrib/pascal/zlibpas.pas
@@ -10,7 +10,7 @@ unit zlibpas;
 interface
 
 const
-  ZLIB_VERSION = '1.2.12';
+  ZLIB_VERSION = '1.2.13';
   ZLIB_VERNUM  = $12a0;
 
 type
diff --git a/zlib/contrib/puff/README b/zlib/contrib/puff/README
index bbc4cb595..d8192c787 100644
--- a/zlib/contrib/puff/README
+++ b/zlib/contrib/puff/README
@@ -38,7 +38,7 @@ Then you can call puff() to decompress a deflate stream that is in memory in
 its entirety at source, to a sufficiently sized block of memory for the
 decompressed data at dest.  puff() is the only external symbol in puff.c  The
 only C library functions that puff.c needs are setjmp() and longjmp(), which
-are used to simplify error checking in the code to improve readabilty.  puff.c
+are used to simplify error checking in the code to improve readability.  puff.c
 does no memory allocation, and uses less than 2K bytes off of the stack.
 
 If destlen is not enough space for the uncompressed data, then inflate will
diff --git a/zlib/contrib/puff/puff.c b/zlib/contrib/puff/puff.c
index c6c90d714..6737ff615 100644
--- a/zlib/contrib/puff/puff.c
+++ b/zlib/contrib/puff/puff.c
@@ -43,7 +43,7 @@
  *                      - Use pointers instead of long to specify source and
  *                        destination sizes to avoid arbitrary 4 GB limits
  * 1.2  17 Mar 2002     - Add faster version of decode(), doubles speed (!),
- *                        but leave simple version for readabilty
+ *                        but leave simple version for readability
  *                      - Make sure invalid distances detected if pointers
  *                        are 16 bits
  *                      - Fix fixed codes table error
@@ -624,7 +624,7 @@ local int fixed(struct state *s)
  *   are themselves compressed using Huffman codes and run-length encoding.  In
  *   the list of code lengths, a 0 symbol means no code, a 1..15 symbol means
  *   that length, and the symbols 16, 17, and 18 are run-length instructions.
- *   Each of 16, 17, and 18 are follwed by extra bits to define the length of
+ *   Each of 16, 17, and 18 are followed by extra bits to define the length of
  *   the run.  16 copies the last length 3 to 6 times.  17 represents 3 to 10
  *   zero lengths, and 18 represents 11 to 138 zero lengths.  Unused symbols
  *   are common, hence the special coding for zero lengths.
diff --git a/zlib/contrib/puff/pufftest.c b/zlib/contrib/puff/pufftest.c
index 776481488..5f72ecc82 100644
--- a/zlib/contrib/puff/pufftest.c
+++ b/zlib/contrib/puff/pufftest.c
@@ -143,7 +143,7 @@ int main(int argc, char **argv)
                                      len - sourcelen);
     }
 
-    /* if requested, inflate again and write decompressd data to stdout */
+    /* if requested, inflate again and write decompressed data to stdout */
     if (put && ret == 0) {
         if (fail)
             destlen >>= 1;
diff --git a/zlib/contrib/vstudio/readme.txt b/zlib/contrib/vstudio/readme.txt
index 48047d9cb..a2e2b8d94 100644
--- a/zlib/contrib/vstudio/readme.txt
+++ b/zlib/contrib/vstudio/readme.txt
@@ -1,4 +1,4 @@
-Building instructions for the DLL versions of Zlib 1.2.12
+Building instructions for the DLL versions of Zlib 1.2.13
 ========================================================
 
 This directory contains projects that build zlib and minizip using
@@ -17,9 +17,6 @@ More information can be found at this site.
 Build instructions for Visual Studio 2008 (32 bits or 64 bits)
 --------------------------------------------------------------
 - Decompress current zlib, including all contrib/* files
-- Compile assembly code (with Visual Studio Command Prompt) by running:
-   bld_ml64.bat (in contrib\masmx64)
-   bld_ml32.bat (in contrib\masmx86)
 - Open contrib\vstudio\vc9\zlibvc.sln with Microsoft Visual C++ 2008
 - Or run: vcbuild /rebuild contrib\vstudio\vc9\zlibvc.sln "Release|Win32"
 
diff --git a/zlib/contrib/vstudio/vc10/miniunz.vcxproj.filters b/zlib/contrib/vstudio/vc10/miniunz.vcxproj.filters
index 0bd12210c..0164e7d46 100644
--- a/zlib/contrib/vstudio/vc10/miniunz.vcxproj.filters
+++ b/zlib/contrib/vstudio/vc10/miniunz.vcxproj.filters
@@ -3,7 +3,7 @@
   <ItemGroup>
     <Filter Include="Source Files">
       <UniqueIdentifier>{048af943-022b-4db6-beeb-a54c34774ee2}</UniqueIdentifier>
-      <Extensions>cpp;c;cxx;def;odl;idl;hpj;bat;asm</Extensions>
+      <Extensions>cpp;c;cxx;def;odl;idl;hpj;bat</Extensions>
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{c1d600d2-888f-4aea-b73e-8b0dd9befa0c}</UniqueIdentifier>
diff --git a/zlib/contrib/vstudio/vc10/minizip.vcxproj.filters b/zlib/contrib/vstudio/vc10/minizip.vcxproj.filters
index 7076d76ff..2badd4bb3 100644
--- a/zlib/contrib/vstudio/vc10/minizip.vcxproj.filters
+++ b/zlib/contrib/vstudio/vc10/minizip.vcxproj.filters
@@ -3,7 +3,7 @@
   <ItemGroup>
     <Filter Include="Source Files">
       <UniqueIdentifier>{c0419b40-bf50-40da-b153-ff74215b79de}</UniqueIdentifier>
-      <Extensions>cpp;c;cxx;def;odl;idl;hpj;bat;asm</Extensions>
+      <Extensions>cpp;c;cxx;def;odl;idl;hpj;bat</Extensions>
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{bb87b070-735b-478e-92ce-7383abb2f36c}</UniqueIdentifier>
diff --git a/zlib/contrib/vstudio/vc10/testzlib.vcxproj b/zlib/contrib/vstudio/vc10/testzlib.vcxproj
index 476b8ea45..9dae2774e 100644
--- a/zlib/contrib/vstudio/vc10/testzlib.vcxproj
+++ b/zlib/contrib/vstudio/vc10/testzlib.vcxproj
@@ -181,7 +181,7 @@
     <ClCompile>
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
@@ -194,7 +194,7 @@
       <DebugInformationFormat>EditAndContinue</DebugInformationFormat>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)testzlib.exe</OutputFile>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>$(OutDir)testzlib.pdb</ProgramDatabaseFile>
@@ -241,7 +241,7 @@
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
       <OmitFramePointers>true</OmitFramePointers>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
@@ -254,7 +254,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)testzlib.exe</OutputFile>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Console</SubSystem>
@@ -269,14 +269,14 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">
@@ -352,14 +352,14 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">
@@ -398,14 +398,6 @@
     <ClCompile Include="..\..\..\crc32.c" />
     <ClCompile Include="..\..\..\deflate.c" />
     <ClCompile Include="..\..\..\infback.c" />
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c" />
     <ClCompile Include="..\..\..\inflate.c" />
     <ClCompile Include="..\..\..\inftrees.c" />
diff --git a/zlib/contrib/vstudio/vc10/testzlib.vcxproj.filters b/zlib/contrib/vstudio/vc10/testzlib.vcxproj.filters
index 327649103..177ea795f 100644
--- a/zlib/contrib/vstudio/vc10/testzlib.vcxproj.filters
+++ b/zlib/contrib/vstudio/vc10/testzlib.vcxproj.filters
@@ -3,7 +3,7 @@
   <ItemGroup>
     <Filter Include="Source Files">
       <UniqueIdentifier>{c1f6a2e3-5da5-4955-8653-310d3efe05a9}</UniqueIdentifier>
-      <Extensions>cpp;c;cxx;def;odl;idl;hpj;bat;asm</Extensions>
+      <Extensions>cpp;c;cxx;def;odl;idl;hpj;bat</Extensions>
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{c2aaffdc-2c95-4d6f-8466-4bec5890af2c}</UniqueIdentifier>
@@ -30,9 +30,6 @@
     <ClCompile Include="..\..\..\infback.c">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <Filter>Source Files</Filter>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c">
       <Filter>Source Files</Filter>
     </ClCompile>
diff --git a/zlib/contrib/vstudio/vc10/testzlibdll.vcxproj.filters b/zlib/contrib/vstudio/vc10/testzlibdll.vcxproj.filters
index ab87f09f4..ac35c5998 100644
--- a/zlib/contrib/vstudio/vc10/testzlibdll.vcxproj.filters
+++ b/zlib/contrib/vstudio/vc10/testzlibdll.vcxproj.filters
@@ -3,7 +3,7 @@
   <ItemGroup>
     <Filter Include="Source Files">
       <UniqueIdentifier>{fa61a89f-93fc-4c89-b29e-36224b7592f4}</UniqueIdentifier>
-      <Extensions>cpp;c;cxx;def;odl;idl;hpj;bat;asm</Extensions>
+      <Extensions>cpp;c;cxx;def;odl;idl;hpj;bat</Extensions>
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{d4b85da0-2ba2-4934-b57f-e2584e3848ee}</UniqueIdentifier>
diff --git a/zlib/contrib/vstudio/vc10/zlib.rc b/zlib/contrib/vstudio/vc10/zlib.rc
index 947587350..cdd7985d4 100644
--- a/zlib/contrib/vstudio/vc10/zlib.rc
+++ b/zlib/contrib/vstudio/vc10/zlib.rc
@@ -2,8 +2,8 @@
 
 #define IDR_VERSION1  1
 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
-  FILEVERSION	 1, 2, 12, 0
-  PRODUCTVERSION 1, 2, 12, 0
+  FILEVERSION	 1, 2, 13, 0
+  PRODUCTVERSION 1, 2, 13, 0
   FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
   FILEFLAGS	0
   FILEOS	VOS_DOS_WINDOWS32
@@ -17,7 +17,7 @@ BEGIN
 
     BEGIN
       VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
-      VALUE "FileVersion",	"1.2.12\0"
+      VALUE "FileVersion",	"1.2.13\0"
       VALUE "InternalName",	"zlib\0"
       VALUE "OriginalFilename",	"zlibwapi.dll\0"
       VALUE "ProductName",	"ZLib.DLL\0"
diff --git a/zlib/contrib/vstudio/vc10/zlibstat.vcxproj b/zlib/contrib/vstudio/vc10/zlibstat.vcxproj
index 45389a352..c6615170d 100644
--- a/zlib/contrib/vstudio/vc10/zlibstat.vcxproj
+++ b/zlib/contrib/vstudio/vc10/zlibstat.vcxproj
@@ -160,7 +160,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -182,16 +182,12 @@
       <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
     </Lib>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx86
-bld_ml32.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ASMV;ASMINF;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -210,19 +206,15 @@ bld_ml32.bat</Command>
     </ResourceCompile>
     <Lib>
       <AdditionalOptions>/MACHINE:X86 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
     </Lib>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx86
-bld_ml32.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -252,7 +244,7 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -274,10 +266,6 @@ bld_ml32.bat</Command>
       <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
     </Lib>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx64
-bld_ml64.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">
     <Midl>
@@ -285,7 +273,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -314,8 +302,8 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ASMV;ASMINF;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -334,14 +322,10 @@ bld_ml64.bat</Command>
     </ResourceCompile>
     <Lib>
       <AdditionalOptions>/MACHINE:AMD64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
     </Lib>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx64
-bld_ml64.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">
     <Midl>
@@ -349,7 +333,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -379,7 +363,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -409,7 +393,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -443,14 +427,6 @@ bld_ml64.bat</Command>
     <ClCompile Include="..\..\..\gzread.c" />
     <ClCompile Include="..\..\..\gzwrite.c" />
     <ClCompile Include="..\..\..\infback.c" />
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c" />
     <ClCompile Include="..\..\..\inflate.c" />
     <ClCompile Include="..\..\..\inftrees.c" />
diff --git a/zlib/contrib/vstudio/vc10/zlibstat.vcxproj.filters b/zlib/contrib/vstudio/vc10/zlibstat.vcxproj.filters
index 0c8b2501c..d3762dcc3 100644
--- a/zlib/contrib/vstudio/vc10/zlibstat.vcxproj.filters
+++ b/zlib/contrib/vstudio/vc10/zlibstat.vcxproj.filters
@@ -33,9 +33,6 @@
     <ClCompile Include="..\..\..\infback.c">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <Filter>Source Files</Filter>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c">
       <Filter>Source Files</Filter>
     </ClCompile>
diff --git a/zlib/contrib/vstudio/vc10/zlibvc.vcxproj b/zlib/contrib/vstudio/vc10/zlibvc.vcxproj
index 7d7c49a6d..b46788aee 100644
--- a/zlib/contrib/vstudio/vc10/zlibvc.vcxproj
+++ b/zlib/contrib/vstudio/vc10/zlibvc.vcxproj
@@ -197,8 +197,8 @@
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
@@ -219,7 +219,7 @@
     </ResourceCompile>
     <Link>
       <AdditionalOptions>/MACHINE:I386 %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <ModuleDefinitionFile>.\zlibvc.def</ModuleDefinitionFile>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -229,10 +229,6 @@
       <DataExecutionPrevention>
       </DataExecutionPrevention>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx86
-bld_ml32.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">
     <Midl>
@@ -244,7 +240,7 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -288,8 +284,8 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -312,7 +308,7 @@ bld_ml32.bat</Command>
     </ResourceCompile>
     <Link>
       <AdditionalOptions>/MACHINE:I386 %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <IgnoreAllDefaultLibraries>false</IgnoreAllDefaultLibraries>
       <ModuleDefinitionFile>.\zlibvc.def</ModuleDefinitionFile>
@@ -322,10 +318,6 @@ bld_ml32.bat</Command>
       <DataExecutionPrevention>
       </DataExecutionPrevention>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx86
-bld_ml32.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <Midl>
@@ -337,8 +329,8 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -358,7 +350,7 @@ bld_ml32.bat</Command>
       <Culture>0x040c</Culture>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <ModuleDefinitionFile>.\zlibvc.def</ModuleDefinitionFile>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -366,10 +358,6 @@ bld_ml32.bat</Command>
       <SubSystem>Windows</SubSystem>
       <TargetMachine>MachineX64</TargetMachine>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx64
-bld_ml64.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">
     <Midl>
@@ -381,7 +369,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -424,7 +412,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -465,7 +453,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -510,8 +498,8 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -533,7 +521,7 @@ bld_ml64.bat</Command>
       <Culture>0x040c</Culture>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <IgnoreAllDefaultLibraries>false</IgnoreAllDefaultLibraries>
       <ModuleDefinitionFile>.\zlibvc.def</ModuleDefinitionFile>
@@ -541,10 +529,6 @@ bld_ml64.bat</Command>
       <SubSystem>Windows</SubSystem>
       <TargetMachine>MachineX64</TargetMachine>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx64
-bld_ml64.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">
     <Midl>
@@ -556,7 +540,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -601,14 +585,6 @@ bld_ml64.bat</Command>
     <ClCompile Include="..\..\..\gzread.c" />
     <ClCompile Include="..\..\..\gzwrite.c" />
     <ClCompile Include="..\..\..\infback.c" />
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c" />
     <ClCompile Include="..\..\..\inflate.c" />
     <ClCompile Include="..\..\..\inftrees.c" />
diff --git a/zlib/contrib/vstudio/vc10/zlibvc.vcxproj.filters b/zlib/contrib/vstudio/vc10/zlibvc.vcxproj.filters
index 22786824f..d0a5378e0 100644
--- a/zlib/contrib/vstudio/vc10/zlibvc.vcxproj.filters
+++ b/zlib/contrib/vstudio/vc10/zlibvc.vcxproj.filters
@@ -42,9 +42,6 @@
     <ClCompile Include="..\..\..\infback.c">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <Filter>Source Files</Filter>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c">
       <Filter>Source Files</Filter>
     </ClCompile>
diff --git a/zlib/contrib/vstudio/vc11/testzlib.vcxproj b/zlib/contrib/vstudio/vc11/testzlib.vcxproj
index 0115dd17b..1c6f26d45 100644
--- a/zlib/contrib/vstudio/vc11/testzlib.vcxproj
+++ b/zlib/contrib/vstudio/vc11/testzlib.vcxproj
@@ -187,7 +187,7 @@
     <ClCompile>
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -200,7 +200,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)testzlib.exe</OutputFile>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>$(OutDir)testzlib.pdb</ProgramDatabaseFile>
@@ -247,7 +247,7 @@
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
       <OmitFramePointers>true</OmitFramePointers>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
@@ -260,7 +260,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)testzlib.exe</OutputFile>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Console</SubSystem>
@@ -275,14 +275,14 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">
@@ -358,14 +358,14 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">
@@ -404,14 +404,6 @@
     <ClCompile Include="..\..\..\crc32.c" />
     <ClCompile Include="..\..\..\deflate.c" />
     <ClCompile Include="..\..\..\infback.c" />
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c" />
     <ClCompile Include="..\..\..\inflate.c" />
     <ClCompile Include="..\..\..\inftrees.c" />
diff --git a/zlib/contrib/vstudio/vc11/zlib.rc b/zlib/contrib/vstudio/vc11/zlib.rc
index 947587350..cdd7985d4 100644
--- a/zlib/contrib/vstudio/vc11/zlib.rc
+++ b/zlib/contrib/vstudio/vc11/zlib.rc
@@ -2,8 +2,8 @@
 
 #define IDR_VERSION1  1
 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
-  FILEVERSION	 1, 2, 12, 0
-  PRODUCTVERSION 1, 2, 12, 0
+  FILEVERSION	 1, 2, 13, 0
+  PRODUCTVERSION 1, 2, 13, 0
   FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
   FILEFLAGS	0
   FILEOS	VOS_DOS_WINDOWS32
@@ -17,7 +17,7 @@ BEGIN
 
     BEGIN
       VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
-      VALUE "FileVersion",	"1.2.12\0"
+      VALUE "FileVersion",	"1.2.13\0"
       VALUE "InternalName",	"zlib\0"
       VALUE "OriginalFilename",	"zlibwapi.dll\0"
       VALUE "ProductName",	"ZLib.DLL\0"
diff --git a/zlib/contrib/vstudio/vc11/zlibstat.vcxproj b/zlib/contrib/vstudio/vc11/zlibstat.vcxproj
index 64b4d869d..5890a17d4 100644
--- a/zlib/contrib/vstudio/vc11/zlibstat.vcxproj
+++ b/zlib/contrib/vstudio/vc11/zlibstat.vcxproj
@@ -167,7 +167,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -193,8 +193,8 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ASMV;ASMINF;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -213,7 +213,7 @@
     </ResourceCompile>
     <Lib>
       <AdditionalOptions>/MACHINE:X86 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
     </Lib>
@@ -221,7 +221,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -251,7 +251,7 @@
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -280,7 +280,7 @@
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -309,8 +309,8 @@
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ASMV;ASMINF;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -329,7 +329,7 @@
     </ResourceCompile>
     <Lib>
       <AdditionalOptions>/MACHINE:AMD64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
     </Lib>
@@ -340,7 +340,7 @@
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -370,7 +370,7 @@
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -400,7 +400,7 @@
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -434,14 +434,6 @@
     <ClCompile Include="..\..\..\gzread.c" />
     <ClCompile Include="..\..\..\gzwrite.c" />
     <ClCompile Include="..\..\..\infback.c" />
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c" />
     <ClCompile Include="..\..\..\inflate.c" />
     <ClCompile Include="..\..\..\inftrees.c" />
diff --git a/zlib/contrib/vstudio/vc11/zlibvc.vcxproj b/zlib/contrib/vstudio/vc11/zlibvc.vcxproj
index c4cffccf1..4951b3bcc 100644
--- a/zlib/contrib/vstudio/vc11/zlibvc.vcxproj
+++ b/zlib/contrib/vstudio/vc11/zlibvc.vcxproj
@@ -204,8 +204,8 @@
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -226,7 +226,7 @@
     </ResourceCompile>
     <Link>
       <AdditionalOptions>/MACHINE:I386 %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <ModuleDefinitionFile>.\zlibvc.def</ModuleDefinitionFile>
@@ -240,10 +240,6 @@
       </DataExecutionPrevention>
       <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx86
-bld_ml32.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">
     <Midl>
@@ -255,7 +251,7 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -303,8 +299,8 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -327,7 +323,7 @@ bld_ml32.bat</Command>
     </ResourceCompile>
     <Link>
       <AdditionalOptions>/MACHINE:I386 %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <IgnoreAllDefaultLibraries>false</IgnoreAllDefaultLibraries>
@@ -341,10 +337,6 @@ bld_ml32.bat</Command>
       </DataExecutionPrevention>
       <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx86
-bld_ml32.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <Midl>
@@ -356,8 +348,8 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -377,7 +369,7 @@ bld_ml32.bat</Command>
       <Culture>0x040c</Culture>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <ModuleDefinitionFile>.\zlibvc.def</ModuleDefinitionFile>
@@ -389,10 +381,6 @@ bld_ml32.bat</Command>
       <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
       <TargetMachine>MachineX64</TargetMachine>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\contrib\masmx64
-bld_ml64.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">
     <Midl>
@@ -404,7 +392,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -447,7 +435,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -492,7 +480,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -537,8 +525,8 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -560,7 +548,7 @@ bld_ml64.bat</Command>
       <Culture>0x040c</Culture>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <IgnoreAllDefaultLibraries>false</IgnoreAllDefaultLibraries>
@@ -572,10 +560,6 @@ bld_ml64.bat</Command>
       <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
       <TargetMachine>MachineX64</TargetMachine>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx64
-bld_ml64.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">
     <Midl>
@@ -587,7 +571,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -632,14 +616,6 @@ bld_ml64.bat</Command>
     <ClCompile Include="..\..\..\gzread.c" />
     <ClCompile Include="..\..\..\gzwrite.c" />
     <ClCompile Include="..\..\..\infback.c" />
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c" />
     <ClCompile Include="..\..\..\inflate.c" />
     <ClCompile Include="..\..\..\inftrees.c" />
diff --git a/zlib/contrib/vstudio/vc12/testzlib.vcxproj b/zlib/contrib/vstudio/vc12/testzlib.vcxproj
index 64b2cbe34..41303c0af 100644
--- a/zlib/contrib/vstudio/vc12/testzlib.vcxproj
+++ b/zlib/contrib/vstudio/vc12/testzlib.vcxproj
@@ -190,7 +190,7 @@
     <ClCompile>
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -203,7 +203,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)testzlib.exe</OutputFile>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>$(OutDir)testzlib.pdb</ProgramDatabaseFile>
@@ -250,7 +250,7 @@
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
       <OmitFramePointers>true</OmitFramePointers>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
@@ -263,7 +263,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)testzlib.exe</OutputFile>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Console</SubSystem>
@@ -279,14 +279,14 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">
@@ -362,14 +362,14 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">
@@ -408,14 +408,6 @@
     <ClCompile Include="..\..\..\crc32.c" />
     <ClCompile Include="..\..\..\deflate.c" />
     <ClCompile Include="..\..\..\infback.c" />
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c" />
     <ClCompile Include="..\..\..\inflate.c" />
     <ClCompile Include="..\..\..\inftrees.c" />
diff --git a/zlib/contrib/vstudio/vc12/zlib.rc b/zlib/contrib/vstudio/vc12/zlib.rc
index 947587350..cdd7985d4 100644
--- a/zlib/contrib/vstudio/vc12/zlib.rc
+++ b/zlib/contrib/vstudio/vc12/zlib.rc
@@ -2,8 +2,8 @@
 
 #define IDR_VERSION1  1
 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
-  FILEVERSION	 1, 2, 12, 0
-  PRODUCTVERSION 1, 2, 12, 0
+  FILEVERSION	 1, 2, 13, 0
+  PRODUCTVERSION 1, 2, 13, 0
   FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
   FILEFLAGS	0
   FILEOS	VOS_DOS_WINDOWS32
@@ -17,7 +17,7 @@ BEGIN
 
     BEGIN
       VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
-      VALUE "FileVersion",	"1.2.12\0"
+      VALUE "FileVersion",	"1.2.13\0"
       VALUE "InternalName",	"zlib\0"
       VALUE "OriginalFilename",	"zlibwapi.dll\0"
       VALUE "ProductName",	"ZLib.DLL\0"
diff --git a/zlib/contrib/vstudio/vc12/zlibstat.vcxproj b/zlib/contrib/vstudio/vc12/zlibstat.vcxproj
index 3fdee7c50..6629d8e2a 100644
--- a/zlib/contrib/vstudio/vc12/zlibstat.vcxproj
+++ b/zlib/contrib/vstudio/vc12/zlibstat.vcxproj
@@ -170,7 +170,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -196,8 +196,8 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ASMV;ASMINF;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -216,7 +216,7 @@
     </ResourceCompile>
     <Lib>
       <AdditionalOptions>/MACHINE:X86 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
     </Lib>
@@ -224,7 +224,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -254,7 +254,7 @@
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -283,7 +283,7 @@
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -312,8 +312,8 @@
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ASMV;ASMINF;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -332,7 +332,7 @@
     </ResourceCompile>
     <Lib>
       <AdditionalOptions>/MACHINE:AMD64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
     </Lib>
@@ -343,7 +343,7 @@
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -373,7 +373,7 @@
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -403,7 +403,7 @@
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -437,14 +437,6 @@
     <ClCompile Include="..\..\..\gzread.c" />
     <ClCompile Include="..\..\..\gzwrite.c" />
     <ClCompile Include="..\..\..\infback.c" />
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c" />
     <ClCompile Include="..\..\..\inflate.c" />
     <ClCompile Include="..\..\..\inftrees.c" />
diff --git a/zlib/contrib/vstudio/vc12/zlibvc.vcxproj b/zlib/contrib/vstudio/vc12/zlibvc.vcxproj
index ab2b6c360..4e0de691e 100644
--- a/zlib/contrib/vstudio/vc12/zlibvc.vcxproj
+++ b/zlib/contrib/vstudio/vc12/zlibvc.vcxproj
@@ -207,8 +207,8 @@
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -229,7 +229,7 @@
     </ResourceCompile>
     <Link>
       <AdditionalOptions>/MACHINE:I386 %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <ModuleDefinitionFile>.\zlibvc.def</ModuleDefinitionFile>
@@ -243,10 +243,6 @@
       </DataExecutionPrevention>
       <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx86
-bld_ml32.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">
     <Midl>
@@ -258,7 +254,7 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -306,8 +302,8 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -330,7 +326,7 @@ bld_ml32.bat</Command>
     </ResourceCompile>
     <Link>
       <AdditionalOptions>/MACHINE:I386 %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <IgnoreAllDefaultLibraries>false</IgnoreAllDefaultLibraries>
@@ -345,10 +341,6 @@ bld_ml32.bat</Command>
       <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
       <ImageHasSafeExceptionHandlers>false</ImageHasSafeExceptionHandlers>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx86
-bld_ml32.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <Midl>
@@ -360,8 +352,8 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -381,7 +373,7 @@ bld_ml32.bat</Command>
       <Culture>0x040c</Culture>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <ModuleDefinitionFile>.\zlibvc.def</ModuleDefinitionFile>
@@ -393,10 +385,6 @@ bld_ml32.bat</Command>
       <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
       <TargetMachine>MachineX64</TargetMachine>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\contrib\masmx64
-bld_ml64.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">
     <Midl>
@@ -408,7 +396,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -451,7 +439,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -496,7 +484,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -541,8 +529,8 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -564,7 +552,7 @@ bld_ml64.bat</Command>
       <Culture>0x040c</Culture>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <IgnoreAllDefaultLibraries>false</IgnoreAllDefaultLibraries>
@@ -576,10 +564,6 @@ bld_ml64.bat</Command>
       <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
       <TargetMachine>MachineX64</TargetMachine>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx64
-bld_ml64.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">
     <Midl>
@@ -591,7 +575,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -636,14 +620,6 @@ bld_ml64.bat</Command>
     <ClCompile Include="..\..\..\gzread.c" />
     <ClCompile Include="..\..\..\gzwrite.c" />
     <ClCompile Include="..\..\..\infback.c" />
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c" />
     <ClCompile Include="..\..\..\inflate.c" />
     <ClCompile Include="..\..\..\inftrees.c" />
diff --git a/zlib/contrib/vstudio/vc14/testzlib.vcxproj b/zlib/contrib/vstudio/vc14/testzlib.vcxproj
index 2c371252a..545204954 100644
--- a/zlib/contrib/vstudio/vc14/testzlib.vcxproj
+++ b/zlib/contrib/vstudio/vc14/testzlib.vcxproj
@@ -190,7 +190,7 @@
     <ClCompile>
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -203,7 +203,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)testzlib.exe</OutputFile>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>$(OutDir)testzlib.pdb</ProgramDatabaseFile>
@@ -250,7 +250,7 @@
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
       <OmitFramePointers>true</OmitFramePointers>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
@@ -263,7 +263,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)testzlib.exe</OutputFile>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Console</SubSystem>
@@ -279,14 +279,14 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">
@@ -362,14 +362,14 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ASMV;ASMINF;WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">
@@ -408,14 +408,6 @@
     <ClCompile Include="..\..\..\crc32.c" />
     <ClCompile Include="..\..\..\deflate.c" />
     <ClCompile Include="..\..\..\infback.c" />
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c" />
     <ClCompile Include="..\..\..\inflate.c" />
     <ClCompile Include="..\..\..\inftrees.c" />
diff --git a/zlib/contrib/vstudio/vc14/zlib.rc b/zlib/contrib/vstudio/vc14/zlib.rc
index 947587350..cdd7985d4 100644
--- a/zlib/contrib/vstudio/vc14/zlib.rc
+++ b/zlib/contrib/vstudio/vc14/zlib.rc
@@ -2,8 +2,8 @@
 
 #define IDR_VERSION1  1
 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
-  FILEVERSION	 1, 2, 12, 0
-  PRODUCTVERSION 1, 2, 12, 0
+  FILEVERSION	 1, 2, 13, 0
+  PRODUCTVERSION 1, 2, 13, 0
   FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
   FILEFLAGS	0
   FILEOS	VOS_DOS_WINDOWS32
@@ -17,7 +17,7 @@ BEGIN
 
     BEGIN
       VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
-      VALUE "FileVersion",	"1.2.12\0"
+      VALUE "FileVersion",	"1.2.13\0"
       VALUE "InternalName",	"zlib\0"
       VALUE "OriginalFilename",	"zlibwapi.dll\0"
       VALUE "ProductName",	"ZLib.DLL\0"
diff --git a/zlib/contrib/vstudio/vc14/zlibstat.vcxproj b/zlib/contrib/vstudio/vc14/zlibstat.vcxproj
index 3e4b98639..85c1e8958 100644
--- a/zlib/contrib/vstudio/vc14/zlibstat.vcxproj
+++ b/zlib/contrib/vstudio/vc14/zlibstat.vcxproj
@@ -170,7 +170,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -196,8 +196,8 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ASMV;ASMINF;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -216,7 +216,7 @@
     </ResourceCompile>
     <Lib>
       <AdditionalOptions>/MACHINE:X86 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
     </Lib>
@@ -224,7 +224,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -254,7 +254,7 @@
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -283,7 +283,7 @@
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -312,8 +312,8 @@
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ASMV;ASMINF;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -332,7 +332,7 @@
     </ResourceCompile>
     <Lib>
       <AdditionalOptions>/MACHINE:AMD64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
     </Lib>
@@ -343,7 +343,7 @@
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -373,7 +373,7 @@
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -403,7 +403,7 @@
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -437,14 +437,6 @@
     <ClCompile Include="..\..\..\gzread.c" />
     <ClCompile Include="..\..\..\gzwrite.c" />
     <ClCompile Include="..\..\..\infback.c" />
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c" />
     <ClCompile Include="..\..\..\inflate.c" />
     <ClCompile Include="..\..\..\inftrees.c" />
diff --git a/zlib/contrib/vstudio/vc14/zlibvc.vcxproj b/zlib/contrib/vstudio/vc14/zlibvc.vcxproj
index f8f673cb0..424ff55b7 100644
--- a/zlib/contrib/vstudio/vc14/zlibvc.vcxproj
+++ b/zlib/contrib/vstudio/vc14/zlibvc.vcxproj
@@ -207,8 +207,8 @@
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -229,7 +229,7 @@
     </ResourceCompile>
     <Link>
       <AdditionalOptions>/MACHINE:I386 %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <ModuleDefinitionFile>.\zlibvc.def</ModuleDefinitionFile>
@@ -243,10 +243,6 @@
       </DataExecutionPrevention>
       <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx86
-bld_ml32.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">
     <Midl>
@@ -258,7 +254,7 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -306,8 +302,8 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -330,7 +326,7 @@ bld_ml32.bat</Command>
     </ResourceCompile>
     <Link>
       <AdditionalOptions>/MACHINE:I386 %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>..\..\masmx86\match686.obj;..\..\masmx86\inffas32.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <IgnoreAllDefaultLibraries>false</IgnoreAllDefaultLibraries>
@@ -345,10 +341,6 @@ bld_ml32.bat</Command>
       <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
       <ImageHasSafeExceptionHandlers>false</ImageHasSafeExceptionHandlers>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx86
-bld_ml32.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <Midl>
@@ -360,8 +352,8 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -381,7 +373,7 @@ bld_ml32.bat</Command>
       <Culture>0x040c</Culture>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <ModuleDefinitionFile>.\zlibvc.def</ModuleDefinitionFile>
@@ -393,10 +385,6 @@ bld_ml32.bat</Command>
       <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
       <TargetMachine>MachineX64</TargetMachine>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\contrib\masmx64
-bld_ml64.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">
     <Midl>
@@ -408,7 +396,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -451,7 +439,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -496,7 +484,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -541,8 +529,8 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
       </ExceptionHandling>
@@ -564,7 +552,7 @@ bld_ml64.bat</Command>
       <Culture>0x040c</Culture>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>..\..\masmx64\gvmat64.obj;..\..\masmx64\inffasx64.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
       <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <IgnoreAllDefaultLibraries>false</IgnoreAllDefaultLibraries>
@@ -576,10 +564,6 @@ bld_ml64.bat</Command>
       <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
       <TargetMachine>MachineX64</TargetMachine>
     </Link>
-    <PreBuildEvent>
-      <Command>cd ..\..\masmx64
-bld_ml64.bat</Command>
-    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">
     <Midl>
@@ -591,7 +575,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -636,14 +620,6 @@ bld_ml64.bat</Command>
     <ClCompile Include="..\..\..\gzread.c" />
     <ClCompile Include="..\..\..\gzwrite.c" />
     <ClCompile Include="..\..\..\infback.c" />
-    <ClCompile Include="..\..\masmx64\inffas8664.c">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
-    </ClCompile>
     <ClCompile Include="..\..\..\inffast.c" />
     <ClCompile Include="..\..\..\inflate.c" />
     <ClCompile Include="..\..\..\inftrees.c" />
diff --git a/zlib/contrib/vstudio/vc9/miniunz.vcproj b/zlib/contrib/vstudio/vc9/miniunz.vcproj
index 038a9e5fa..83bfbdd21 100644
--- a/zlib/contrib/vstudio/vc9/miniunz.vcproj
+++ b/zlib/contrib/vstudio/vc9/miniunz.vcproj
@@ -542,7 +542,7 @@
 	<Files>
 		<Filter
 			Name="Source Files"
-			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm"
+			Filter="cpp;c;cxx;def;odl;idl;hpj;bat"
 			>
 			<File
 				RelativePath="..\..\minizip\miniunz.c"
diff --git a/zlib/contrib/vstudio/vc9/minizip.vcproj b/zlib/contrib/vstudio/vc9/minizip.vcproj
index ad4023991..5f4e9eeb4 100644
--- a/zlib/contrib/vstudio/vc9/minizip.vcproj
+++ b/zlib/contrib/vstudio/vc9/minizip.vcproj
@@ -539,7 +539,7 @@
 	<Files>
 		<Filter
 			Name="Source Files"
-			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm"
+			Filter="cpp;c;cxx;def;odl;idl;hpj;bat"
 			>
 			<File
 				RelativePath="..\..\minizip\minizip.c"
diff --git a/zlib/contrib/vstudio/vc9/testzlib.vcproj b/zlib/contrib/vstudio/vc9/testzlib.vcproj
index c9f19d24e..9e0c37ea3 100644
--- a/zlib/contrib/vstudio/vc9/testzlib.vcproj
+++ b/zlib/contrib/vstudio/vc9/testzlib.vcproj
@@ -48,7 +48,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="..\..\.."
-				PreprocessorDefinitions="ASMV;ASMINF;WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="0"
 				RuntimeLibrary="1"
@@ -71,7 +71,6 @@
 			/>
 			<Tool
 				Name="VCLinkerTool"
-				AdditionalDependencies="..\..\masmx86\match686.obj ..\..\masmx86\inffas32.obj"
 				OutputFile="$(OutDir)/testzlib.exe"
 				LinkIncremental="2"
 				GenerateManifest="false"
@@ -128,7 +127,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				AdditionalIncludeDirectories="..\..\.."
-				PreprocessorDefinitions="ASMV;ASMINF;WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
 				BasicRuntimeChecks="0"
 				RuntimeLibrary="3"
 				BufferSecurityCheck="false"
@@ -145,7 +144,6 @@
 			/>
 			<Tool
 				Name="VCLinkerTool"
-				AdditionalDependencies="..\..\masmx64\gvmat64.obj ..\..\masmx64\inffasx64.obj"
 				GenerateManifest="false"
 			/>
 			<Tool
@@ -517,7 +515,7 @@
 				InlineFunctionExpansion="1"
 				OmitFramePointers="true"
 				AdditionalIncludeDirectories="..\..\.."
-				PreprocessorDefinitions="ASMV;ASMINF;WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
 				StringPooling="true"
 				BasicRuntimeChecks="0"
 				RuntimeLibrary="0"
@@ -540,7 +538,6 @@
 			/>
 			<Tool
 				Name="VCLinkerTool"
-				AdditionalDependencies="..\..\masmx86\match686.obj ..\..\masmx86\inffas32.obj"
 				OutputFile="$(OutDir)/testzlib.exe"
 				LinkIncremental="1"
 				GenerateManifest="false"
@@ -600,7 +597,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				AdditionalIncludeDirectories="..\..\.."
-				PreprocessorDefinitions="ASMV;ASMINF;WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
 				BasicRuntimeChecks="0"
 				RuntimeLibrary="0"
 				BufferSecurityCheck="false"
@@ -617,7 +614,6 @@
 			/>
 			<Tool
 				Name="VCLinkerTool"
-				AdditionalDependencies="..\..\masmx64\gvmat64.obj ..\..\masmx64\inffasx64.obj"
 				GenerateManifest="false"
 			/>
 			<Tool
@@ -733,7 +729,7 @@
 	<Files>
 		<Filter
 			Name="Source Files"
-			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm"
+			Filter="cpp;c;cxx;def;odl;idl;hpj;bat"
 			>
 			<File
 				RelativePath="..\..\..\adler32.c"
@@ -756,58 +752,6 @@
 				>
 			</File>
 			<File
-				RelativePath="..\..\masmx64\inffas8664.c"
-				>
-				<FileConfiguration
-					Name="Debug|Win32"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Debug|Itanium"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="ReleaseWithoutAsm|Win32"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="ReleaseWithoutAsm|Itanium"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Win32"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Itanium"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-			</File>
-			<File
 				RelativePath="..\..\..\inffast.c"
 				>
 			</File>
diff --git a/zlib/contrib/vstudio/vc9/testzlibdll.vcproj b/zlib/contrib/vstudio/vc9/testzlibdll.vcproj
index d7530fd7d..8522f82eb 100644
--- a/zlib/contrib/vstudio/vc9/testzlibdll.vcproj
+++ b/zlib/contrib/vstudio/vc9/testzlibdll.vcproj
@@ -542,7 +542,7 @@
 	<Files>
 		<Filter
 			Name="Source Files"
-			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm"
+			Filter="cpp;c;cxx;def;odl;idl;hpj;bat"
 			>
 			<File
 				RelativePath="..\..\testzlib\testzlib.c"
diff --git a/zlib/contrib/vstudio/vc9/zlib.rc b/zlib/contrib/vstudio/vc9/zlib.rc
index 947587350..cdd7985d4 100644
--- a/zlib/contrib/vstudio/vc9/zlib.rc
+++ b/zlib/contrib/vstudio/vc9/zlib.rc
@@ -2,8 +2,8 @@
 
 #define IDR_VERSION1  1
 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
-  FILEVERSION	 1, 2, 12, 0
-  PRODUCTVERSION 1, 2, 12, 0
+  FILEVERSION	 1, 2, 13, 0
+  PRODUCTVERSION 1, 2, 13, 0
   FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
   FILEFLAGS	0
   FILEOS	VOS_DOS_WINDOWS32
@@ -17,7 +17,7 @@ BEGIN
 
     BEGIN
       VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
-      VALUE "FileVersion",	"1.2.12\0"
+      VALUE "FileVersion",	"1.2.13\0"
       VALUE "InternalName",	"zlib\0"
       VALUE "OriginalFilename",	"zlibwapi.dll\0"
       VALUE "ProductName",	"ZLib.DLL\0"
diff --git a/zlib/contrib/vstudio/vc9/zlibstat.vcproj b/zlib/contrib/vstudio/vc9/zlibstat.vcproj
index d4ffb46b2..df481e52f 100644
--- a/zlib/contrib/vstudio/vc9/zlibstat.vcproj
+++ b/zlib/contrib/vstudio/vc9/zlibstat.vcproj
@@ -47,7 +47,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
+				AdditionalIncludeDirectories="..\..\.."
 				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
 				ExceptionHandling="0"
 				RuntimeLibrary="1"
@@ -121,7 +121,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
+				AdditionalIncludeDirectories="..\..\.."
 				PreprocessorDefinitions="ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
 				ExceptionHandling="0"
 				RuntimeLibrary="3"
@@ -195,7 +195,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
+				AdditionalIncludeDirectories="..\..\.."
 				PreprocessorDefinitions="ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
 				ExceptionHandling="0"
 				RuntimeLibrary="3"
@@ -268,8 +268,8 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
-				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ASMV;ASMINF"
+				AdditionalIncludeDirectories="..\..\.."
+				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
 				StringPooling="true"
 				ExceptionHandling="0"
 				RuntimeLibrary="0"
@@ -295,7 +295,6 @@
 			<Tool
 				Name="VCLibrarianTool"
 				AdditionalOptions="/MACHINE:X86 /NODEFAULTLIB"
-				AdditionalDependencies="..\..\masmx86\match686.obj ..\..\masmx86\inffas32.obj "
 				OutputFile="$(OutDir)\zlibstat.lib"
 				SuppressStartupBanner="true"
 			/>
@@ -343,8 +342,8 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
-				PreprocessorDefinitions="ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ASMV;ASMINF;WIN64"
+				AdditionalIncludeDirectories="..\..\.."
+				PreprocessorDefinitions="ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
 				StringPooling="true"
 				ExceptionHandling="0"
 				RuntimeLibrary="2"
@@ -370,7 +369,6 @@
 			<Tool
 				Name="VCLibrarianTool"
 				AdditionalOptions="/MACHINE:AMD64 /NODEFAULTLIB"
-				AdditionalDependencies="..\..\masmx64\gvmat64.obj ..\..\masmx64\inffasx64.obj "
 				OutputFile="$(OutDir)\zlibstat.lib"
 				SuppressStartupBanner="true"
 			/>
@@ -418,7 +416,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
+				AdditionalIncludeDirectories="..\..\.."
 				PreprocessorDefinitions="ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
 				StringPooling="true"
 				ExceptionHandling="0"
@@ -491,7 +489,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
+				AdditionalIncludeDirectories="..\..\.."
 				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
 				StringPooling="true"
 				ExceptionHandling="0"
@@ -565,7 +563,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
+				AdditionalIncludeDirectories="..\..\.."
 				PreprocessorDefinitions="ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
 				StringPooling="true"
 				ExceptionHandling="0"
@@ -639,7 +637,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
+				AdditionalIncludeDirectories="..\..\.."
 				PreprocessorDefinitions="ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
 				StringPooling="true"
 				ExceptionHandling="0"
@@ -733,58 +731,6 @@
 				>
 			</File>
 			<File
-				RelativePath="..\..\masmx64\inffas8664.c"
-				>
-				<FileConfiguration
-					Name="Debug|Win32"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Debug|Itanium"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Win32"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Itanium"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="ReleaseWithoutAsm|Win32"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="ReleaseWithoutAsm|Itanium"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-			</File>
-			<File
 				RelativePath="..\..\..\inffast.c"
 				>
 			</File>
diff --git a/zlib/contrib/vstudio/vc9/zlibvc.vcproj b/zlib/contrib/vstudio/vc9/zlibvc.vcproj
index 95bb241f3..30a509137 100644
--- a/zlib/contrib/vstudio/vc9/zlibvc.vcproj
+++ b/zlib/contrib/vstudio/vc9/zlibvc.vcproj
@@ -53,8 +53,8 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
-				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF"
+				AdditionalIncludeDirectories="..\..\.."
+				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI"
 				ExceptionHandling="0"
 				RuntimeLibrary="1"
 				BufferSecurityCheck="false"
@@ -81,7 +81,6 @@
 			<Tool
 				Name="VCLinkerTool"
 				AdditionalOptions="/MACHINE:I386"
-				AdditionalDependencies="..\..\masmx86\match686.obj ..\..\masmx86\inffas32.obj"
 				OutputFile="$(OutDir)\zlibwapi.dll"
 				LinkIncremental="2"
 				SuppressStartupBanner="true"
@@ -150,8 +149,8 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
-				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;WIN64"
+				AdditionalIncludeDirectories="..\..\.."
+				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64"
 				ExceptionHandling="0"
 				RuntimeLibrary="3"
 				BufferSecurityCheck="false"
@@ -177,7 +176,6 @@
 			/>
 			<Tool
 				Name="VCLinkerTool"
-				AdditionalDependencies="..\..\masmx64\gvmat64.obj ..\..\masmx64\inffasx64.obj "
 				OutputFile="$(OutDir)\zlibwapi.dll"
 				LinkIncremental="2"
 				SuppressStartupBanner="true"
@@ -245,7 +243,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
+				AdditionalIncludeDirectories="..\..\.."
 				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64"
 				ExceptionHandling="0"
 				RuntimeLibrary="3"
@@ -340,7 +338,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
+				AdditionalIncludeDirectories="..\..\.."
 				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI"
 				StringPooling="true"
 				ExceptionHandling="0"
@@ -440,7 +438,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
+				AdditionalIncludeDirectories="..\..\.."
 				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64"
 				StringPooling="true"
 				ExceptionHandling="0"
@@ -538,7 +536,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
+				AdditionalIncludeDirectories="..\..\.."
 				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64"
 				StringPooling="true"
 				ExceptionHandling="0"
@@ -636,8 +634,8 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
-				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF"
+				AdditionalIncludeDirectories="..\..\.."
+				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI"
 				StringPooling="true"
 				ExceptionHandling="0"
 				RuntimeLibrary="0"
@@ -666,7 +664,6 @@
 			<Tool
 				Name="VCLinkerTool"
 				AdditionalOptions="/MACHINE:I386"
-				AdditionalDependencies="..\..\masmx86\match686.obj ..\..\masmx86\inffas32.obj "
 				OutputFile="$(OutDir)\zlibwapi.dll"
 				LinkIncremental="1"
 				SuppressStartupBanner="true"
@@ -737,8 +734,8 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
-				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;WIN64"
+				AdditionalIncludeDirectories="..\..\.."
+				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64"
 				StringPooling="true"
 				ExceptionHandling="0"
 				RuntimeLibrary="2"
@@ -766,7 +763,6 @@
 			/>
 			<Tool
 				Name="VCLinkerTool"
-				AdditionalDependencies="..\..\masmx64\gvmat64.obj ..\..\masmx64\inffasx64.obj "
 				OutputFile="$(OutDir)\zlibwapi.dll"
 				LinkIncremental="1"
 				SuppressStartupBanner="true"
@@ -836,7 +832,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..;..\..\masmx86"
+				AdditionalIncludeDirectories="..\..\.."
 				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64"
 				StringPooling="true"
 				ExceptionHandling="0"
@@ -950,58 +946,6 @@
 				>
 			</File>
 			<File
-				RelativePath="..\..\masmx64\inffas8664.c"
-				>
-				<FileConfiguration
-					Name="Debug|Win32"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Debug|Itanium"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="ReleaseWithoutAsm|Win32"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="ReleaseWithoutAsm|Itanium"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Win32"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Itanium"
-					ExcludedFromBuild="true"
-					>
-					<Tool
-						Name="VCCLCompilerTool"
-					/>
-				</FileConfiguration>
-			</File>
-			<File
 				RelativePath="..\..\..\inffast.c"
 				>
 			</File>
diff --git a/zlib/crc32.c b/zlib/crc32.c
index a1bdce5c2..f8357b083 100644
--- a/zlib/crc32.c
+++ b/zlib/crc32.c
@@ -98,13 +98,22 @@
 #  endif
 #endif
 
+/* If available, use the ARM processor CRC32 instruction. */
+#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8
+#  define ARMCRC32
+#endif
+
 /* Local functions. */
 local z_crc_t multmodp OF((z_crc_t a, z_crc_t b));
 local z_crc_t x2nmodp OF((z_off64_t n, unsigned k));
 
-/* If available, use the ARM processor CRC32 instruction. */
-#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8
-#  define ARMCRC32
+#if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
+    local z_word_t byte_swap OF((z_word_t word));
+#endif
+
+#if defined(W) && !defined(ARMCRC32)
+    local z_crc_t crc_word OF((z_word_t data));
+    local z_word_t crc_word_big OF((z_word_t data));
 #endif
 
 #if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
@@ -630,7 +639,7 @@ unsigned long ZEXPORT crc32_z(crc, buf, len)
 #endif /* DYNAMIC_CRC_TABLE */
 
     /* Pre-condition the CRC */
-    crc ^= 0xffffffff;
+    crc = (~crc) & 0xffffffff;
 
     /* Compute the CRC up to a word boundary. */
     while (len && ((z_size_t)buf & 7) != 0) {
@@ -645,8 +654,8 @@ unsigned long ZEXPORT crc32_z(crc, buf, len)
     len &= 7;
 
     /* Do three interleaved CRCs to realize the throughput of one crc32x
-       instruction per cycle. Each CRC is calcuated on Z_BATCH words. The three
-       CRCs are combined into a single CRC after each set of batches. */
+       instruction per cycle. Each CRC is calculated on Z_BATCH words. The
+       three CRCs are combined into a single CRC after each set of batches. */
     while (num >= 3 * Z_BATCH) {
         crc1 = 0;
         crc2 = 0;
@@ -749,7 +758,7 @@ unsigned long ZEXPORT crc32_z(crc, buf, len)
 #endif /* DYNAMIC_CRC_TABLE */
 
     /* Pre-condition the CRC */
-    crc ^= 0xffffffff;
+    crc = (~crc) & 0xffffffff;
 
 #ifdef W
 
@@ -1077,7 +1086,7 @@ uLong ZEXPORT crc32_combine64(crc1, crc2, len2)
 #ifdef DYNAMIC_CRC_TABLE
     once(&made, make_crc_table);
 #endif /* DYNAMIC_CRC_TABLE */
-    return multmodp(x2nmodp(len2, 3), crc1) ^ crc2;
+    return multmodp(x2nmodp(len2, 3), crc1) ^ (crc2 & 0xffffffff);
 }
 
 /* ========================================================================= */
@@ -1086,7 +1095,7 @@ uLong ZEXPORT crc32_combine(crc1, crc2, len2)
     uLong crc2;
     z_off_t len2;
 {
-    return crc32_combine64(crc1, crc2, len2);
+    return crc32_combine64(crc1, crc2, (z_off64_t)len2);
 }
 
 /* ========================================================================= */
@@ -1103,14 +1112,14 @@ uLong ZEXPORT crc32_combine_gen64(len2)
 uLong ZEXPORT crc32_combine_gen(len2)
     z_off_t len2;
 {
-    return crc32_combine_gen64(len2);
+    return crc32_combine_gen64((z_off64_t)len2);
 }
 
 /* ========================================================================= */
-uLong crc32_combine_op(crc1, crc2, op)
+uLong ZEXPORT crc32_combine_op(crc1, crc2, op)
     uLong crc1;
     uLong crc2;
     uLong op;
 {
-    return multmodp(op, crc1) ^ crc2;
+    return multmodp(op, crc1) ^ (crc2 & 0xffffffff);
 }
diff --git a/zlib/deflate.c b/zlib/deflate.c
index 799fb93cc..4a689db35 100644
--- a/zlib/deflate.c
+++ b/zlib/deflate.c
@@ -52,7 +52,7 @@
 #include "deflate.h"
 
 const char deflate_copyright[] =
-   " deflate 1.2.12 Copyright 1995-2022 Jean-loup Gailly and Mark Adler ";
+   " deflate 1.2.13 Copyright 1995-2022 Jean-loup Gailly and Mark Adler ";
 /*
   If you use the zlib library in a product, an acknowledgment is welcome
   in the documentation of your product. If for some reason you cannot
@@ -87,13 +87,7 @@ local void lm_init        OF((deflate_state *s));
 local void putShortMSB    OF((deflate_state *s, uInt b));
 local void flush_pending  OF((z_streamp strm));
 local unsigned read_buf   OF((z_streamp strm, Bytef *buf, unsigned size));
-#ifdef ASMV
-#  pragma message("Assembler code may have bugs -- use at your own risk")
-      void match_init OF((void)); /* asm code initialization */
-      uInt longest_match  OF((deflate_state *s, IPos cur_match));
-#else
 local uInt longest_match  OF((deflate_state *s, IPos cur_match));
-#endif
 
 #ifdef ZLIB_DEBUG
 local  void check_match OF((deflate_state *s, IPos start, IPos match,
@@ -160,7 +154,7 @@ local const config configuration_table[10] = {
  *    characters, so that a running hash key can be computed from the previous
  *    key instead of complete recalculation each time.
  */
-#define UPDATE_HASH(s,h,c) (h = (((h)<<s->hash_shift) ^ (c)) & s->hash_mask)
+#define UPDATE_HASH(s,h,c) (h = (((h) << s->hash_shift) ^ (c)) & s->hash_mask)
 
 
 /* ===========================================================================
@@ -191,9 +185,9 @@ local const config configuration_table[10] = {
  */
 #define CLEAR_HASH(s) \
     do { \
-        s->head[s->hash_size-1] = NIL; \
+        s->head[s->hash_size - 1] = NIL; \
         zmemzero((Bytef *)s->head, \
-                 (unsigned)(s->hash_size-1)*sizeof(*s->head)); \
+                 (unsigned)(s->hash_size - 1)*sizeof(*s->head)); \
     } while (0)
 
 /* ===========================================================================
@@ -285,6 +279,8 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
 
     if (windowBits < 0) { /* suppress zlib wrapper */
         wrap = 0;
+        if (windowBits < -15)
+            return Z_STREAM_ERROR;
         windowBits = -windowBits;
     }
 #ifdef GZIP
@@ -314,7 +310,7 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
     s->hash_bits = (uInt)memLevel + 7;
     s->hash_size = 1 << s->hash_bits;
     s->hash_mask = s->hash_size - 1;
-    s->hash_shift =  ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH);
+    s->hash_shift =  ((s->hash_bits + MIN_MATCH-1) / MIN_MATCH);
 
     s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte));
     s->prev   = (Posf *)  ZALLOC(strm, s->w_size, sizeof(Pos));
@@ -340,11 +336,11 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
      * sym_buf value to read moves forward three bytes. From that symbol, up to
      * 31 bits are written to pending_buf. The closest the written pending_buf
      * bits gets to the next sym_buf symbol to read is just before the last
-     * code is written. At that time, 31*(n-2) bits have been written, just
-     * after 24*(n-2) bits have been consumed from sym_buf. sym_buf starts at
-     * 8*n bits into pending_buf. (Note that the symbol buffer fills when n-1
+     * code is written. At that time, 31*(n - 2) bits have been written, just
+     * after 24*(n - 2) bits have been consumed from sym_buf. sym_buf starts at
+     * 8*n bits into pending_buf. (Note that the symbol buffer fills when n - 1
      * symbols are written.) The closest the writing gets to what is unread is
-     * then n+14 bits. Here n is lit_bufsize, which is 16384 by default, and
+     * then n + 14 bits. Here n is lit_bufsize, which is 16384 by default, and
      * can range from 128 to 32768.
      *
      * Therefore, at a minimum, there are 142 bits of space between what is
@@ -390,7 +386,7 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
 /* =========================================================================
  * Check for a valid deflate stream state. Return 0 if ok, 1 if not.
  */
-local int deflateStateCheck (strm)
+local int deflateStateCheck(strm)
     z_streamp strm;
 {
     deflate_state *s;
@@ -413,7 +409,7 @@ local int deflateStateCheck (strm)
 }
 
 /* ========================================================================= */
-int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
+int ZEXPORT deflateSetDictionary(strm, dictionary, dictLength)
     z_streamp strm;
     const Bytef *dictionary;
     uInt  dictLength;
@@ -482,7 +478,7 @@ int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
 }
 
 /* ========================================================================= */
-int ZEXPORT deflateGetDictionary (strm, dictionary, dictLength)
+int ZEXPORT deflateGetDictionary(strm, dictionary, dictLength)
     z_streamp strm;
     Bytef *dictionary;
     uInt  *dictLength;
@@ -504,7 +500,7 @@ int ZEXPORT deflateGetDictionary (strm, dictionary, dictLength)
 }
 
 /* ========================================================================= */
-int ZEXPORT deflateResetKeep (strm)
+int ZEXPORT deflateResetKeep(strm)
     z_streamp strm;
 {
     deflate_state *s;
@@ -542,7 +538,7 @@ int ZEXPORT deflateResetKeep (strm)
 }
 
 /* ========================================================================= */
-int ZEXPORT deflateReset (strm)
+int ZEXPORT deflateReset(strm)
     z_streamp strm;
 {
     int ret;
@@ -554,7 +550,7 @@ int ZEXPORT deflateReset (strm)
 }
 
 /* ========================================================================= */
-int ZEXPORT deflateSetHeader (strm, head)
+int ZEXPORT deflateSetHeader(strm, head)
     z_streamp strm;
     gz_headerp head;
 {
@@ -565,7 +561,7 @@ int ZEXPORT deflateSetHeader (strm, head)
 }
 
 /* ========================================================================= */
-int ZEXPORT deflatePending (strm, pending, bits)
+int ZEXPORT deflatePending(strm, pending, bits)
     unsigned *pending;
     int *bits;
     z_streamp strm;
@@ -579,7 +575,7 @@ int ZEXPORT deflatePending (strm, pending, bits)
 }
 
 /* ========================================================================= */
-int ZEXPORT deflatePrime (strm, bits, value)
+int ZEXPORT deflatePrime(strm, bits, value)
     z_streamp strm;
     int bits;
     int value;
@@ -674,36 +670,50 @@ int ZEXPORT deflateTune(strm, good_length, max_lazy, nice_length, max_chain)
 }
 
 /* =========================================================================
- * For the default windowBits of 15 and memLevel of 8, this function returns
- * a close to exact, as well as small, upper bound on the compressed size.
- * They are coded as constants here for a reason--if the #define's are
- * changed, then this function needs to be changed as well.  The return
- * value for 15 and 8 only works for those exact settings.
+ * For the default windowBits of 15 and memLevel of 8, this function returns a
+ * close to exact, as well as small, upper bound on the compressed size. This
+ * is an expansion of ~0.03%, plus a small constant.
+ *
+ * For any setting other than those defaults for windowBits and memLevel, one
+ * of two worst case bounds is returned. This is at most an expansion of ~4% or
+ * ~13%, plus a small constant.
  *
- * For any setting other than those defaults for windowBits and memLevel,
- * the value returned is a conservative worst case for the maximum expansion
- * resulting from using fixed blocks instead of stored blocks, which deflate
- * can emit on compressed data for some combinations of the parameters.
+ * Both the 0.03% and 4% derive from the overhead of stored blocks. The first
+ * one is for stored blocks of 16383 bytes (memLevel == 8), whereas the second
+ * is for stored blocks of 127 bytes (the worst case memLevel == 1). The
+ * expansion results from five bytes of header for each stored block.
  *
- * This function could be more sophisticated to provide closer upper bounds for
- * every combination of windowBits and memLevel.  But even the conservative
- * upper bound of about 14% expansion does not seem onerous for output buffer
- * allocation.
+ * The larger expansion of 13% results from a window size less than or equal to
+ * the symbols buffer size (windowBits <= memLevel + 7). In that case some of
+ * the data being compressed may have slid out of the sliding window, impeding
+ * a stored block from being emitted. Then the only choice is a fixed or
+ * dynamic block, where a fixed block limits the maximum expansion to 9 bits
+ * per 8-bit byte, plus 10 bits for every block. The smallest block size for
+ * which this can occur is 255 (memLevel == 2).
+ *
+ * Shifts are used to approximate divisions, for speed.
  */
 uLong ZEXPORT deflateBound(strm, sourceLen)
     z_streamp strm;
     uLong sourceLen;
 {
     deflate_state *s;
-    uLong complen, wraplen;
+    uLong fixedlen, storelen, wraplen;
+
+    /* upper bound for fixed blocks with 9-bit literals and length 255
+       (memLevel == 2, which is the lowest that may not use stored blocks) --
+       ~13% overhead plus a small constant */
+    fixedlen = sourceLen + (sourceLen >> 3) + (sourceLen >> 8) +
+               (sourceLen >> 9) + 4;
 
-    /* conservative upper bound for compressed data */
-    complen = sourceLen +
-              ((sourceLen + 7) >> 3) + ((sourceLen + 63) >> 6) + 5;
+    /* upper bound for stored blocks with length 127 (memLevel == 1) --
+       ~4% overhead plus a small constant */
+    storelen = sourceLen + (sourceLen >> 5) + (sourceLen >> 7) +
+               (sourceLen >> 11) + 7;
 
-    /* if can't get parameters, return conservative bound plus zlib wrapper */
+    /* if can't get parameters, return larger bound plus a zlib wrapper */
     if (deflateStateCheck(strm))
-        return complen + 6;
+        return (fixedlen > storelen ? fixedlen : storelen) + 6;
 
     /* compute wrapper length */
     s = strm->state;
@@ -740,11 +750,12 @@ uLong ZEXPORT deflateBound(strm, sourceLen)
         wraplen = 6;
     }
 
-    /* if not default parameters, return conservative bound */
+    /* if not default parameters, return one of the conservative bounds */
     if (s->w_bits != 15 || s->hash_bits != 8 + 7)
-        return complen + wraplen;
+        return (s->w_bits <= s->hash_bits ? fixedlen : storelen) + wraplen;
 
-    /* default settings: return tight bound for that case */
+    /* default settings: return tight bound for that case -- ~0.03% overhead
+       plus a small constant */
     return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
            (sourceLen >> 25) + 13 - 6 + wraplen;
 }
@@ -754,7 +765,7 @@ uLong ZEXPORT deflateBound(strm, sourceLen)
  * IN assertion: the stream state is correct and there is enough room in
  * pending_buf.
  */
-local void putShortMSB (s, b)
+local void putShortMSB(s, b)
     deflate_state *s;
     uInt b;
 {
@@ -801,7 +812,7 @@ local void flush_pending(strm)
     } while (0)
 
 /* ========================================================================= */
-int ZEXPORT deflate (strm, flush)
+int ZEXPORT deflate(strm, flush)
     z_streamp strm;
     int flush;
 {
@@ -856,7 +867,7 @@ int ZEXPORT deflate (strm, flush)
         s->status = BUSY_STATE;
     if (s->status == INIT_STATE) {
         /* zlib header */
-        uInt header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8;
+        uInt header = (Z_DEFLATED + ((s->w_bits - 8) << 4)) << 8;
         uInt level_flags;
 
         if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2)
@@ -1116,7 +1127,7 @@ int ZEXPORT deflate (strm, flush)
 }
 
 /* ========================================================================= */
-int ZEXPORT deflateEnd (strm)
+int ZEXPORT deflateEnd(strm)
     z_streamp strm;
 {
     int status;
@@ -1142,7 +1153,7 @@ int ZEXPORT deflateEnd (strm)
  * To simplify the source, this is not supported for 16-bit MSDOS (which
  * doesn't have enough memory anyway to duplicate compression states).
  */
-int ZEXPORT deflateCopy (dest, source)
+int ZEXPORT deflateCopy(dest, source)
     z_streamp dest;
     z_streamp source;
 {
@@ -1231,7 +1242,7 @@ local unsigned read_buf(strm, buf, size)
 /* ===========================================================================
  * Initialize the "longest match" routines for a new zlib stream
  */
-local void lm_init (s)
+local void lm_init(s)
     deflate_state *s;
 {
     s->window_size = (ulg)2L*s->w_size;
@@ -1252,11 +1263,6 @@ local void lm_init (s)
     s->match_length = s->prev_length = MIN_MATCH-1;
     s->match_available = 0;
     s->ins_h = 0;
-#ifndef FASTEST
-#ifdef ASMV
-    match_init(); /* initialize the asm code */
-#endif
-#endif
 }
 
 #ifndef FASTEST
@@ -1269,10 +1275,6 @@ local void lm_init (s)
  *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
  * OUT assertion: the match length is not greater than s->lookahead.
  */
-#ifndef ASMV
-/* For 80x86 and 680x0, an optimized version will be provided in match.asm or
- * match.S. The code will be functionally equivalent.
- */
 local uInt longest_match(s, cur_match)
     deflate_state *s;
     IPos cur_match;                             /* current match */
@@ -1297,10 +1299,10 @@ local uInt longest_match(s, cur_match)
      */
     register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1;
     register ush scan_start = *(ushf*)scan;
-    register ush scan_end   = *(ushf*)(scan+best_len-1);
+    register ush scan_end   = *(ushf*)(scan + best_len - 1);
 #else
     register Bytef *strend = s->window + s->strstart + MAX_MATCH;
-    register Byte scan_end1  = scan[best_len-1];
+    register Byte scan_end1  = scan[best_len - 1];
     register Byte scan_end   = scan[best_len];
 #endif
 
@@ -1318,7 +1320,8 @@ local uInt longest_match(s, cur_match)
      */
     if ((uInt)nice_match > s->lookahead) nice_match = (int)s->lookahead;
 
-    Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
+    Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
+           "need lookahead");
 
     do {
         Assert(cur_match < s->strstart, "no future");
@@ -1336,43 +1339,44 @@ local uInt longest_match(s, cur_match)
         /* This code assumes sizeof(unsigned short) == 2. Do not use
          * UNALIGNED_OK if your compiler uses a different size.
          */
-        if (*(ushf*)(match+best_len-1) != scan_end ||
+        if (*(ushf*)(match + best_len - 1) != scan_end ||
             *(ushf*)match != scan_start) continue;
 
         /* It is not necessary to compare scan[2] and match[2] since they are
          * always equal when the other bytes match, given that the hash keys
          * are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at
-         * strstart+3, +5, ... up to strstart+257. We check for insufficient
+         * strstart + 3, + 5, up to strstart + 257. We check for insufficient
          * lookahead only every 4th comparison; the 128th check will be made
-         * at strstart+257. If MAX_MATCH-2 is not a multiple of 8, it is
+         * at strstart + 257. If MAX_MATCH-2 is not a multiple of 8, it is
          * necessary to put more guard bytes at the end of the window, or
          * to check more often for insufficient lookahead.
          */
         Assert(scan[2] == match[2], "scan[2]?");
         scan++, match++;
         do {
-        } while (*(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
-                 *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
-                 *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
-                 *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
+        } while (*(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
+                 *(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
+                 *(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
+                 *(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
                  scan < strend);
         /* The funny "do {}" generates better code on most compilers */
 
-        /* Here, scan <= window+strstart+257 */
-        Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+        /* Here, scan <= window + strstart + 257 */
+        Assert(scan <= s->window + (unsigned)(s->window_size - 1),
+               "wild scan");
         if (*scan == *match) scan++;
 
-        len = (MAX_MATCH - 1) - (int)(strend-scan);
+        len = (MAX_MATCH - 1) - (int)(strend - scan);
         scan = strend - (MAX_MATCH-1);
 
 #else /* UNALIGNED_OK */
 
-        if (match[best_len]   != scan_end  ||
-            match[best_len-1] != scan_end1 ||
-            *match            != *scan     ||
-            *++match          != scan[1])      continue;
+        if (match[best_len]     != scan_end  ||
+            match[best_len - 1] != scan_end1 ||
+            *match              != *scan     ||
+            *++match            != scan[1])      continue;
 
-        /* The check at best_len-1 can be removed because it will be made
+        /* The check at best_len - 1 can be removed because it will be made
          * again later. (This heuristic is not always a win.)
          * It is not necessary to compare scan[2] and match[2] since they
          * are always equal when the other bytes match, given that
@@ -1382,7 +1386,7 @@ local uInt longest_match(s, cur_match)
         Assert(*scan == *match, "match[2]?");
 
         /* We check for insufficient lookahead only every 8th comparison;
-         * the 256th check will be made at strstart+258.
+         * the 256th check will be made at strstart + 258.
          */
         do {
         } while (*++scan == *++match && *++scan == *++match &&
@@ -1391,7 +1395,8 @@ local uInt longest_match(s, cur_match)
                  *++scan == *++match && *++scan == *++match &&
                  scan < strend);
 
-        Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+        Assert(scan <= s->window + (unsigned)(s->window_size - 1),
+               "wild scan");
 
         len = MAX_MATCH - (int)(strend - scan);
         scan = strend - MAX_MATCH;
@@ -1403,9 +1408,9 @@ local uInt longest_match(s, cur_match)
             best_len = len;
             if (len >= nice_match) break;
 #ifdef UNALIGNED_OK
-            scan_end = *(ushf*)(scan+best_len-1);
+            scan_end = *(ushf*)(scan + best_len - 1);
 #else
-            scan_end1  = scan[best_len-1];
+            scan_end1  = scan[best_len - 1];
             scan_end   = scan[best_len];
 #endif
         }
@@ -1415,7 +1420,6 @@ local uInt longest_match(s, cur_match)
     if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
     return s->lookahead;
 }
-#endif /* ASMV */
 
 #else /* FASTEST */
 
@@ -1436,7 +1440,8 @@ local uInt longest_match(s, cur_match)
      */
     Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
 
-    Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
+    Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
+           "need lookahead");
 
     Assert(cur_match < s->strstart, "no future");
 
@@ -1446,7 +1451,7 @@ local uInt longest_match(s, cur_match)
      */
     if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1;
 
-    /* The check at best_len-1 can be removed because it will be made
+    /* The check at best_len - 1 can be removed because it will be made
      * again later. (This heuristic is not always a win.)
      * It is not necessary to compare scan[2] and match[2] since they
      * are always equal when the other bytes match, given that
@@ -1456,7 +1461,7 @@ local uInt longest_match(s, cur_match)
     Assert(*scan == *match, "match[2]?");
 
     /* We check for insufficient lookahead only every 8th comparison;
-     * the 256th check will be made at strstart+258.
+     * the 256th check will be made at strstart + 258.
      */
     do {
     } while (*++scan == *++match && *++scan == *++match &&
@@ -1465,7 +1470,7 @@ local uInt longest_match(s, cur_match)
              *++scan == *++match && *++scan == *++match &&
              scan < strend);
 
-    Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+    Assert(scan <= s->window + (unsigned)(s->window_size - 1), "wild scan");
 
     len = MAX_MATCH - (int)(strend - scan);
 
@@ -1501,7 +1506,7 @@ local void check_match(s, start, match, length)
         z_error("invalid match");
     }
     if (z_verbose > 1) {
-        fprintf(stderr,"\\[%d,%d]", start-match, length);
+        fprintf(stderr,"\\[%d,%d]", start - match, length);
         do { putc(s->window[start++], stderr); } while (--length != 0);
     }
 }
@@ -1547,9 +1552,9 @@ local void fill_window(s)
         /* If the window is almost full and there is insufficient lookahead,
          * move the upper half to the lower one to make room in the upper half.
          */
-        if (s->strstart >= wsize+MAX_DIST(s)) {
+        if (s->strstart >= wsize + MAX_DIST(s)) {
 
-            zmemcpy(s->window, s->window+wsize, (unsigned)wsize - more);
+            zmemcpy(s->window, s->window + wsize, (unsigned)wsize - more);
             s->match_start -= wsize;
             s->strstart    -= wsize; /* we now have strstart >= MAX_DIST */
             s->block_start -= (long) wsize;
@@ -1680,7 +1685,7 @@ local void fill_window(s)
  *
  * deflate_stored() is written to minimize the number of times an input byte is
  * copied. It is most efficient with large input and output buffers, which
- * maximizes the opportunites to have a single copy from next_in to next_out.
+ * maximizes the opportunities to have a single copy from next_in to next_out.
  */
 local block_state deflate_stored(s, flush)
     deflate_state *s;
@@ -1890,7 +1895,7 @@ local block_state deflate_fast(s, flush)
             if (s->lookahead == 0) break; /* flush the current block */
         }
 
-        /* Insert the string window[strstart .. strstart+2] in the
+        /* Insert the string window[strstart .. strstart + 2] in the
          * dictionary, and set hash_head to the head of the hash chain:
          */
         hash_head = NIL;
@@ -1938,7 +1943,7 @@ local block_state deflate_fast(s, flush)
                 s->strstart += s->match_length;
                 s->match_length = 0;
                 s->ins_h = s->window[s->strstart];
-                UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);
+                UPDATE_HASH(s, s->ins_h, s->window[s->strstart + 1]);
 #if MIN_MATCH != 3
                 Call UPDATE_HASH() MIN_MATCH-3 more times
 #endif
@@ -1949,7 +1954,7 @@ local block_state deflate_fast(s, flush)
         } else {
             /* No match, output a literal byte */
             Tracevv((stderr,"%c", s->window[s->strstart]));
-            _tr_tally_lit (s, s->window[s->strstart], bflush);
+            _tr_tally_lit(s, s->window[s->strstart], bflush);
             s->lookahead--;
             s->strstart++;
         }
@@ -1993,7 +1998,7 @@ local block_state deflate_slow(s, flush)
             if (s->lookahead == 0) break; /* flush the current block */
         }
 
-        /* Insert the string window[strstart .. strstart+2] in the
+        /* Insert the string window[strstart .. strstart + 2] in the
          * dictionary, and set hash_head to the head of the hash chain:
          */
         hash_head = NIL;
@@ -2035,17 +2040,17 @@ local block_state deflate_slow(s, flush)
             uInt max_insert = s->strstart + s->lookahead - MIN_MATCH;
             /* Do not insert strings in hash table beyond this. */
 
-            check_match(s, s->strstart-1, s->prev_match, s->prev_length);
+            check_match(s, s->strstart - 1, s->prev_match, s->prev_length);
 
-            _tr_tally_dist(s, s->strstart -1 - s->prev_match,
+            _tr_tally_dist(s, s->strstart - 1 - s->prev_match,
                            s->prev_length - MIN_MATCH, bflush);
 
             /* Insert in hash table all strings up to the end of the match.
-             * strstart-1 and strstart are already inserted. If there is not
+             * strstart - 1 and strstart are already inserted. If there is not
              * enough lookahead, the last two strings are not inserted in
              * the hash table.
              */
-            s->lookahead -= s->prev_length-1;
+            s->lookahead -= s->prev_length - 1;
             s->prev_length -= 2;
             do {
                 if (++s->strstart <= max_insert) {
@@ -2063,8 +2068,8 @@ local block_state deflate_slow(s, flush)
              * single literal. If there was a match but the current match
              * is longer, truncate the previous match to a single literal.
              */
-            Tracevv((stderr,"%c", s->window[s->strstart-1]));
-            _tr_tally_lit(s, s->window[s->strstart-1], bflush);
+            Tracevv((stderr,"%c", s->window[s->strstart - 1]));
+            _tr_tally_lit(s, s->window[s->strstart - 1], bflush);
             if (bflush) {
                 FLUSH_BLOCK_ONLY(s, 0);
             }
@@ -2082,8 +2087,8 @@ local block_state deflate_slow(s, flush)
     }
     Assert (flush != Z_NO_FLUSH, "no flush?");
     if (s->match_available) {
-        Tracevv((stderr,"%c", s->window[s->strstart-1]));
-        _tr_tally_lit(s, s->window[s->strstart-1], bflush);
+        Tracevv((stderr,"%c", s->window[s->strstart - 1]));
+        _tr_tally_lit(s, s->window[s->strstart - 1], bflush);
         s->match_available = 0;
     }
     s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
@@ -2140,7 +2145,8 @@ local block_state deflate_rle(s, flush)
                 if (s->match_length > s->lookahead)
                     s->match_length = s->lookahead;
             }
-            Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
+            Assert(scan <= s->window + (uInt)(s->window_size - 1),
+                   "wild scan");
         }
 
         /* Emit match if have run of MIN_MATCH or longer, else emit literal */
@@ -2155,7 +2161,7 @@ local block_state deflate_rle(s, flush)
         } else {
             /* No match, output a literal byte */
             Tracevv((stderr,"%c", s->window[s->strstart]));
-            _tr_tally_lit (s, s->window[s->strstart], bflush);
+            _tr_tally_lit(s, s->window[s->strstart], bflush);
             s->lookahead--;
             s->strstart++;
         }
@@ -2195,7 +2201,7 @@ local block_state deflate_huff(s, flush)
         /* Output a literal byte */
         s->match_length = 0;
         Tracevv((stderr,"%c", s->window[s->strstart]));
-        _tr_tally_lit (s, s->window[s->strstart], bflush);
+        _tr_tally_lit(s, s->window[s->strstart], bflush);
         s->lookahead--;
         s->strstart++;
         if (bflush) FLUSH_BLOCK(s, 0);
diff --git a/zlib/deflate.h b/zlib/deflate.h
index 17c226113..1a06cd5f2 100644
--- a/zlib/deflate.h
+++ b/zlib/deflate.h
@@ -329,8 +329,8 @@ void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf,
 # define _tr_tally_dist(s, distance, length, flush) \
   { uch len = (uch)(length); \
     ush dist = (ush)(distance); \
-    s->sym_buf[s->sym_next++] = dist; \
-    s->sym_buf[s->sym_next++] = dist >> 8; \
+    s->sym_buf[s->sym_next++] = (uch)dist; \
+    s->sym_buf[s->sym_next++] = (uch)(dist >> 8); \
     s->sym_buf[s->sym_next++] = len; \
     dist--; \
     s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
diff --git a/zlib/examples/enough.c b/zlib/examples/enough.c
index 19cf08c1f..8a3cade49 100644
--- a/zlib/examples/enough.c
+++ b/zlib/examples/enough.c
@@ -486,7 +486,7 @@ local void enough(int syms) {
 // are 286, 9, and 15 respectively, for the deflate literal/length code. The
 // possible codes are counted for each number of coded symbols from two to the
 // maximum. The counts for each of those and the total number of codes are
-// shown. The maximum number of inflate table entires is then calculated across
+// shown. The maximum number of inflate table entries is then calculated across
 // all possible codes. Each new maximum number of table entries and the
 // associated sub-code (starting at root + 1 == 10 bits) is shown.
 //
diff --git a/zlib/examples/fitblk.c b/zlib/examples/fitblk.c
index c61de5c99..68f56809d 100644
--- a/zlib/examples/fitblk.c
+++ b/zlib/examples/fitblk.c
@@ -17,7 +17,7 @@
    data in order to determine how much of that input will compress to
    nearly the requested output block size.  The first pass generates
    enough deflate blocks to produce output to fill the requested
-   output size plus a specfied excess amount (see the EXCESS define
+   output size plus a specified excess amount (see the EXCESS define
    below).  The last deflate block may go quite a bit past that, but
    is discarded.  The second pass decompresses and recompresses just
    the compressed data that fit in the requested plus excess sized
@@ -109,7 +109,7 @@ local int recompress(z_streamp inf, z_streamp def)
         if (ret == Z_MEM_ERROR)
             return ret;
 
-        /* compress what was decompresed until done or no room */
+        /* compress what was decompressed until done or no room */
         def->avail_in = RAWLEN - inf->avail_out;
         def->next_in = raw;
         if (inf->avail_out != 0)
diff --git a/zlib/examples/gun.c b/zlib/examples/gun.c
index be44fa51f..bea5497e5 100644
--- a/zlib/examples/gun.c
+++ b/zlib/examples/gun.c
@@ -43,7 +43,7 @@
    gun will also decompress files made by Unix compress, which uses LZW
    compression.  These files are automatically detected by virtue of their
    magic header bytes.  Since the end of Unix compress stream is marked by the
-   end-of-file, they cannot be concantenated.  If a Unix compress stream is
+   end-of-file, they cannot be concatenated.  If a Unix compress stream is
    encountered in an input file, it is the last stream in that file.
 
    Like gunzip and uncompress, the file attributes of the original compressed
diff --git a/zlib/examples/gzappend.c b/zlib/examples/gzappend.c
index d7eea3e97..23e93cf68 100644
--- a/zlib/examples/gzappend.c
+++ b/zlib/examples/gzappend.c
@@ -33,7 +33,7 @@
  *                      - Add L to constants in lseek() calls
  *                      - Remove some debugging information in error messages
  *                      - Use new data_type definition for zlib 1.2.1
- *                      - Simplfy and unify file operations
+ *                      - Simplify and unify file operations
  *                      - Finish off gzip file in gztack()
  *                      - Use deflatePrime() instead of adding empty blocks
  *                      - Keep gzip file clean on appended file read errors
@@ -54,7 +54,7 @@
    block boundary to facilitate locating and modifying the last block bit at
    the start of the final deflate block.  Also whether using Z_BLOCK or not,
    another required feature of zlib 1.2.x is that inflate() now provides the
-   number of unusued bits in the last input byte used.  gzappend will not work
+   number of unused bits in the last input byte used.  gzappend will not work
    with versions of zlib earlier than 1.2.1.
 
    gzappend first decompresses the gzip file internally, discarding all but
diff --git a/zlib/examples/gzlog.h b/zlib/examples/gzlog.h
index 86f0cecba..4f0510955 100644
--- a/zlib/examples/gzlog.h
+++ b/zlib/examples/gzlog.h
@@ -40,7 +40,7 @@
    its new size at that time.  After each write operation, the log file is a
    valid gzip file that can decompressed to recover what was written.
 
-   The gzlog operations can be interupted at any point due to an application or
+   The gzlog operations can be interrupted at any point due to an application or
    system crash, and the log file will be recovered the next time the log is
    opened with gzlog_open().
  */
diff --git a/zlib/examples/zran.c b/zlib/examples/zran.c
index f279db71c..879c47ccf 100644
--- a/zlib/examples/zran.c
+++ b/zlib/examples/zran.c
@@ -21,7 +21,7 @@
    An access point can be created at the start of any deflate block, by saving
    the starting file offset and bit of that block, and the 32K bytes of
    uncompressed data that precede that block.  Also the uncompressed offset of
-   that block is saved to provide a referece for locating a desired starting
+   that block is saved to provide a reference for locating a desired starting
    point in the uncompressed stream.  deflate_index_build() works by
    decompressing the input zlib or gzip stream a block at a time, and at the
    end of each block deciding if enough uncompressed data has gone by to
diff --git a/zlib/gzlib.c b/zlib/gzlib.c
index dddaf2687..55da46a45 100644
--- a/zlib/gzlib.c
+++ b/zlib/gzlib.c
@@ -30,7 +30,7 @@ local gzFile gz_open OF((const void *, int, const char *));
 
    The gz_strwinerror function does not change the current setting of
    GetLastError. */
-char ZLIB_INTERNAL *gz_strwinerror (error)
+char ZLIB_INTERNAL *gz_strwinerror(error)
      DWORD error;
 {
     static char buf[1024];
diff --git a/zlib/gzread.c b/zlib/gzread.c
index 884c9bfe4..dd7738159 100644
--- a/zlib/gzread.c
+++ b/zlib/gzread.c
@@ -157,11 +157,9 @@ local int gz_look(state)
        the output buffer is larger than the input buffer, which also assures
        space for gzungetc() */
     state->x.next = state->out;
-    if (strm->avail_in) {
-        memcpy(state->x.next, strm->next_in, strm->avail_in);
-        state->x.have = strm->avail_in;
-        strm->avail_in = 0;
-    }
+    memcpy(state->x.next, strm->next_in, strm->avail_in);
+    state->x.have = strm->avail_in;
+    strm->avail_in = 0;
     state->how = COPY;
     state->direct = 1;
     return 0;
diff --git a/zlib/gzwrite.c b/zlib/gzwrite.c
index a8ffc8f53..eb8a0e589 100644
--- a/zlib/gzwrite.c
+++ b/zlib/gzwrite.c
@@ -474,7 +474,7 @@ int ZEXPORTVA gzprintf(gzFile file, const char *format, ...)
 #else /* !STDC && !Z_HAVE_STDARG_H */
 
 /* -- see zlib.h -- */
-int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
+int ZEXPORTVA gzprintf(file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
                        a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
     gzFile file;
     const char *format;
diff --git a/zlib/infback.c b/zlib/infback.c
index a390c58e8..babeaf180 100644
--- a/zlib/infback.c
+++ b/zlib/infback.c
@@ -66,6 +66,7 @@ int stream_size;
     state->window = window;
     state->wnext = 0;
     state->whave = 0;
+    state->sane = 1;
     return Z_OK;
 }
 
@@ -605,25 +606,27 @@ void FAR *out_desc;
             break;
 
         case DONE:
-            /* inflate stream terminated properly -- write leftover output */
+            /* inflate stream terminated properly */
             ret = Z_STREAM_END;
-            if (left < state->wsize) {
-                if (out(out_desc, state->window, state->wsize - left))
-                    ret = Z_BUF_ERROR;
-            }
             goto inf_leave;
 
         case BAD:
             ret = Z_DATA_ERROR;
             goto inf_leave;
 
-        default:                /* can't happen, but makes compilers happy */
+        default:
+            /* can't happen, but makes compilers happy */
             ret = Z_STREAM_ERROR;
             goto inf_leave;
         }
 
-    /* Return unused input */
+    /* Write leftover output and return unused input */
   inf_leave:
+    if (left < state->wsize) {
+        if (out(out_desc, state->window, state->wsize - left) &&
+            ret == Z_STREAM_END)
+            ret = Z_BUF_ERROR;
+    }
     strm->next_in = next;
     strm->avail_in = have;
     return ret;
diff --git a/zlib/inflate.c b/zlib/inflate.c
index 7be8c6366..8acbef44e 100644
--- a/zlib/inflate.c
+++ b/zlib/inflate.c
@@ -168,6 +168,8 @@ int windowBits;
 
     /* extract wrap request from windowBits parameter */
     if (windowBits < 0) {
+        if (windowBits < -15)
+            return Z_STREAM_ERROR;
         wrap = 0;
         windowBits = -windowBits;
     }
@@ -764,8 +766,9 @@ int flush;
                 if (copy > have) copy = have;
                 if (copy) {
                     if (state->head != Z_NULL &&
-                        state->head->extra != Z_NULL) {
-                        len = state->head->extra_len - state->length;
+                        state->head->extra != Z_NULL &&
+                        (len = state->head->extra_len - state->length) <
+                            state->head->extra_max) {
                         zmemcpy(state->head->extra + len, next,
                                 len + copy > state->head->extra_max ?
                                 state->head->extra_max - len : copy);
diff --git a/zlib/inftrees.c b/zlib/inftrees.c
index 09462a740..57d2793be 100644
--- a/zlib/inftrees.c
+++ b/zlib/inftrees.c
@@ -9,7 +9,7 @@
 #define MAXBITS 15
 
 const char inflate_copyright[] =
-   " inflate 1.2.12 Copyright 1995-2022 Mark Adler ";
+   " inflate 1.2.13 Copyright 1995-2022 Mark Adler ";
 /*
   If you use the zlib library in a product, an acknowledgment is welcome
   in the documentation of your product. If for some reason you cannot
@@ -62,7 +62,7 @@ unsigned short FAR *work;
         35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
     static const unsigned short lext[31] = { /* Length codes 257..285 extra */
         16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
-        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 199, 202};
+        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 194, 65};
     static const unsigned short dbase[32] = { /* Distance codes 0..29 base */
         1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
         257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
diff --git a/zlib/inftrees.h b/zlib/inftrees.h
index baa53a0b1..f53665311 100644
--- a/zlib/inftrees.h
+++ b/zlib/inftrees.h
@@ -38,7 +38,7 @@ typedef struct {
 /* Maximum size of the dynamic table.  The maximum number of code structures is
    1444, which is the sum of 852 for literal/length codes and 592 for distance
    codes.  These values were found by exhaustive searches using the program
-   examples/enough.c found in the zlib distribtution.  The arguments to that
+   examples/enough.c found in the zlib distribution.  The arguments to that
    program are the number of symbols, the initial root table size, and the
    maximum bit length of a code.  "enough 286 9 15" for literal/length codes
    returns returns 852, and "enough 30 6 15" for distance codes returns 592.
diff --git a/zlib/make_vms.com b/zlib/make_vms.com
index 65e9d0cbc..4dc8a8913 100644
--- a/zlib/make_vms.com
+++ b/zlib/make_vms.com
@@ -14,9 +14,9 @@ $! 0.02 20061008 Adapt to new Makefile.in
 $! 0.03 20091224 Add support for large file check
 $! 0.04 20100110 Add new gzclose, gzlib, gzread, gzwrite
 $! 0.05 20100221 Exchange zlibdefs.h by zconf.h.in
-$! 0.06 20120111 Fix missing amiss_err, update zconf_h.in, fix new exmples
+$! 0.06 20120111 Fix missing amiss_err, update zconf_h.in, fix new examples
 $!               subdir path, update module search in makefile.in
-$! 0.07 20120115 Triggered by work done by Alexey Chupahin completly redesigned
+$! 0.07 20120115 Triggered by work done by Alexey Chupahin completely redesigned
 $!               shared image creation
 $! 0.08 20120219 Make it work on VAX again, pre-load missing symbols to shared
 $!               image
diff --git a/zlib/os400/README400 b/zlib/os400/README400
index 10f6c9d40..c06fa8459 100644
--- a/zlib/os400/README400
+++ b/zlib/os400/README400
@@ -1,9 +1,9 @@
-        ZLIB version 1.2.12 for OS/400 installation instructions
+        ZLIB version 1.2.13 for OS/400 installation instructions
 
 1) Download and unpack the zlib tarball to some IFS directory.
    (i.e.: /path/to/the/zlib/ifs/source/directory)
 
-   If the installed IFS command suppors gzip format, this is straightforward,
+   If the installed IFS command supports gzip format, this is straightforward,
 else you have to unpack first to some directory on a system supporting it,
 then move the whole directory to the IFS via the network (via SMB or FTP).
 
@@ -43,6 +43,6 @@ Notes:  For OS/400 ILE RPG programmers, a /copy member defining the ZLIB
 
         Remember that most foreign textual data are ASCII coded: this
                 implementation does not handle conversion from/to ASCII, so
-                text data code conversions must be done explicitely.
+                text data code conversions must be done explicitly.
 
         Mainly for the reason above, always open zipped files in binary mode.
diff --git a/zlib/os400/bndsrc b/zlib/os400/bndsrc
index 5e6e0a2f0..9f92bb10c 100644
--- a/zlib/os400/bndsrc
+++ b/zlib/os400/bndsrc
@@ -116,4 +116,12 @@ STRPGMEXP PGMLVL(*CURRENT) SIGNATURE('ZLIB')
   EXPORT SYMBOL("inflateValidate")
   EXPORT SYMBOL("uncompress2")
 
+/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
+/*   Version 1.2.12 additional entry points.                        */
+/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
+
+  EXPORT SYMBOL("crc32_combine_gen64")
+  EXPORT SYMBOL("crc32_combine_gen")
+  EXPORT SYMBOL("crc32_combine_op")
+
 ENDPGMEXP
diff --git a/zlib/os400/zlib.inc b/zlib/os400/zlib.inc
index fda156bf9..c273c863c 100644
--- a/zlib/os400/zlib.inc
+++ b/zlib/os400/zlib.inc
@@ -1,7 +1,7 @@
       *  ZLIB.INC - Interface to the general purpose compression library
       *
       *  ILE RPG400 version by Patrick Monnerat, DATASPHERE.
-      *  Version 1.2.12
+      *  Version 1.2.13
       *
       *
       *  WARNING:
@@ -22,12 +22,12 @@
       *
       *  Versioning information.
       *
-     D ZLIB_VERSION    C                   '1.2.12'
+     D ZLIB_VERSION    C                   '1.2.13'
      D ZLIB_VERNUM     C                   X'12a0'
      D ZLIB_VER_MAJOR  C                   1
      D ZLIB_VER_MINOR  C                   2
      D ZLIB_VER_REVISION...
-     D                 C                   12
+     D                 C                   13
      D ZLIB_VER_SUBREVISION...
      D                 C                   0
       *
diff --git a/zlib/qnx/package.qpg b/zlib/qnx/package.qpg
index badd1d5a0..ba2f1a2d6 100644
--- a/zlib/qnx/package.qpg
+++ b/zlib/qnx/package.qpg
@@ -25,10 +25,10 @@
       <QPG:Files>
          <QPG:Add file="../zconf.h" install="/opt/include/" user="root:sys" permission="644"/>
          <QPG:Add file="../zlib.h" install="/opt/include/" user="root:sys" permission="644"/>
-         <QPG:Add file="../libz.so.1.2.12" install="/opt/lib/" user="root:bin" permission="644"/>
-         <QPG:Add file="libz.so" install="/opt/lib/" component="dev" filetype="symlink" linkto="libz.so.1.2.12"/>
-         <QPG:Add file="libz.so.1" install="/opt/lib/" filetype="symlink" linkto="libz.so.1.2.12"/>
-         <QPG:Add file="../libz.so.1.2.12" install="/opt/lib/" component="slib"/>
+         <QPG:Add file="../libz.so.1.2.13" install="/opt/lib/" user="root:bin" permission="644"/>
+         <QPG:Add file="libz.so" install="/opt/lib/" component="dev" filetype="symlink" linkto="libz.so.1.2.13"/>
+         <QPG:Add file="libz.so.1" install="/opt/lib/" filetype="symlink" linkto="libz.so.1.2.13"/>
+         <QPG:Add file="../libz.so.1.2.13" install="/opt/lib/" component="slib"/>
       </QPG:Files>
 
       <QPG:PackageFilter>
@@ -63,7 +63,7 @@
             </QPM:ProductDescription>
 
             <QPM:ReleaseDescription>
-               <QPM:ReleaseVersion>1.2.12</QPM:ReleaseVersion>
+               <QPM:ReleaseVersion>1.2.13</QPM:ReleaseVersion>
                <QPM:ReleaseUrgency>Medium</QPM:ReleaseUrgency>
                <QPM:ReleaseStability>Stable</QPM:ReleaseStability>
                <QPM:ReleaseNoteMinor></QPM:ReleaseNoteMinor>
diff --git a/zlib/test/example.c b/zlib/test/example.c
index 949f4f625..1470bc842 100644
--- a/zlib/test/example.c
+++ b/zlib/test/example.c
@@ -555,7 +555,8 @@ int main(argc, argv)
         exit(1);
 
     } else if (strcmp(zlibVersion(), ZLIB_VERSION) != 0) {
-        fprintf(stderr, "warning: different zlib version\n");
+        fprintf(stderr, "warning: different zlib version linked: %s\n",
+                zlibVersion());
     }
 
     printf("zlib version %s = 0x%04x, compile flags = 0x%lx\n",
diff --git a/zlib/test/minigzip.c b/zlib/test/minigzip.c
index e22fb08c0..a649d2b3d 100644
--- a/zlib/test/minigzip.c
+++ b/zlib/test/minigzip.c
@@ -500,7 +500,7 @@ void file_uncompress(file)
     char *infile, *outfile;
     FILE  *out;
     gzFile in;
-    unsigned len = strlen(file);
+    z_size_t len = strlen(file);
 
     if (len + strlen(GZ_SUFFIX) >= sizeof(buf)) {
         fprintf(stderr, "%s: filename too long\n", prog);
diff --git a/zlib/treebuild.xml b/zlib/treebuild.xml
index 781b4c98c..0017a45d3 100644
--- a/zlib/treebuild.xml
+++ b/zlib/treebuild.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" ?>
-<package name="zlib" version="1.2.12">
-    <library name="zlib" dlversion="1.2.12" dlname="z">
+<package name="zlib" version="1.2.13">
+    <library name="zlib" dlversion="1.2.13" dlname="z">
 	<property name="description"> zip compression library </property>
 	<property name="include-target-dir" value="$(@PACKAGE/install-includedir)" />
 
diff --git a/zlib/trees.c b/zlib/trees.c
index f73fd99c3..5f305c472 100644
--- a/zlib/trees.c
+++ b/zlib/trees.c
@@ -193,7 +193,7 @@ local void send_bits(s, value, length)
     s->bits_sent += (ulg)length;
 
     /* If not enough room in bi_buf, use (valid) bits from bi_buf and
-     * (16 - bi_valid) bits from value, leaving (width - (16-bi_valid))
+     * (16 - bi_valid) bits from value, leaving (width - (16 - bi_valid))
      * unused bits in value.
      */
     if (s->bi_valid > (int)Buf_size - length) {
@@ -256,7 +256,7 @@ local void tr_static_init()
     length = 0;
     for (code = 0; code < LENGTH_CODES-1; code++) {
         base_length[code] = length;
-        for (n = 0; n < (1<<extra_lbits[code]); n++) {
+        for (n = 0; n < (1 << extra_lbits[code]); n++) {
             _length_code[length++] = (uch)code;
         }
     }
@@ -265,13 +265,13 @@ local void tr_static_init()
      * in two different ways: code 284 + 5 bits or code 285, so we
      * overwrite length_code[255] to use the best encoding:
      */
-    _length_code[length-1] = (uch)code;
+    _length_code[length - 1] = (uch)code;
 
     /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
     dist = 0;
     for (code = 0 ; code < 16; code++) {
         base_dist[code] = dist;
-        for (n = 0; n < (1<<extra_dbits[code]); n++) {
+        for (n = 0; n < (1 << extra_dbits[code]); n++) {
             _dist_code[dist++] = (uch)code;
         }
     }
@@ -279,11 +279,11 @@ local void tr_static_init()
     dist >>= 7; /* from now on, all distances are divided by 128 */
     for ( ; code < D_CODES; code++) {
         base_dist[code] = dist << 7;
-        for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {
+        for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {
             _dist_code[256 + dist++] = (uch)code;
         }
     }
-    Assert (dist == 256, "tr_static_init: 256+dist != 512");
+    Assert (dist == 256, "tr_static_init: 256 + dist != 512");
 
     /* Construct the codes of the static literal tree */
     for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0;
@@ -312,7 +312,7 @@ local void tr_static_init()
 }
 
 /* ===========================================================================
- * Genererate the file trees.h describing the static trees.
+ * Generate the file trees.h describing the static trees.
  */
 #ifdef GEN_TREES_H
 #  ifndef ZLIB_DEBUG
@@ -321,7 +321,7 @@ local void tr_static_init()
 
 #  define SEPARATOR(i, last, width) \
       ((i) == (last)? "\n};\n\n" :    \
-       ((i) % (width) == (width)-1 ? ",\n" : ", "))
+       ((i) % (width) == (width) - 1 ? ",\n" : ", "))
 
 void gen_trees_header()
 {
@@ -458,7 +458,7 @@ local void pqdownheap(s, tree, k)
     while (j <= s->heap_len) {
         /* Set j to the smallest of the two sons: */
         if (j < s->heap_len &&
-            smaller(tree, s->heap[j+1], s->heap[j], s->depth)) {
+            smaller(tree, s->heap[j + 1], s->heap[j], s->depth)) {
             j++;
         }
         /* Exit if v is smaller than both sons */
@@ -507,7 +507,7 @@ local void gen_bitlen(s, desc)
      */
     tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */
 
-    for (h = s->heap_max+1; h < HEAP_SIZE; h++) {
+    for (h = s->heap_max + 1; h < HEAP_SIZE; h++) {
         n = s->heap[h];
         bits = tree[tree[n].Dad].Len + 1;
         if (bits > max_length) bits = max_length, overflow++;
@@ -518,7 +518,7 @@ local void gen_bitlen(s, desc)
 
         s->bl_count[bits]++;
         xbits = 0;
-        if (n >= base) xbits = extra[n-base];
+        if (n >= base) xbits = extra[n - base];
         f = tree[n].Freq;
         s->opt_len += (ulg)f * (unsigned)(bits + xbits);
         if (stree) s->static_len += (ulg)f * (unsigned)(stree[n].Len + xbits);
@@ -530,10 +530,10 @@ local void gen_bitlen(s, desc)
 
     /* Find the first bit length which could increase: */
     do {
-        bits = max_length-1;
+        bits = max_length - 1;
         while (s->bl_count[bits] == 0) bits--;
-        s->bl_count[bits]--;      /* move one leaf down the tree */
-        s->bl_count[bits+1] += 2; /* move one overflow item as its brother */
+        s->bl_count[bits]--;        /* move one leaf down the tree */
+        s->bl_count[bits + 1] += 2; /* move one overflow item as its brother */
         s->bl_count[max_length]--;
         /* The brother of the overflow item also moves one step up,
          * but this does not affect bl_count[max_length]
@@ -569,7 +569,7 @@ local void gen_bitlen(s, desc)
  * OUT assertion: the field code is set for all tree elements of non
  *     zero code length.
  */
-local void gen_codes (tree, max_code, bl_count)
+local void gen_codes(tree, max_code, bl_count)
     ct_data *tree;             /* the tree to decorate */
     int max_code;              /* largest code with non zero frequency */
     ushf *bl_count;            /* number of codes at each bit length */
@@ -583,13 +583,13 @@ local void gen_codes (tree, max_code, bl_count)
      * without bit reversal.
      */
     for (bits = 1; bits <= MAX_BITS; bits++) {
-        code = (code + bl_count[bits-1]) << 1;
+        code = (code + bl_count[bits - 1]) << 1;
         next_code[bits] = (ush)code;
     }
     /* Check that the bit counts in bl_count are consistent. The last code
      * must be all ones.
      */
-    Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
+    Assert (code + bl_count[MAX_BITS] - 1 == (1 << MAX_BITS) - 1,
             "inconsistent bit counts");
     Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
 
@@ -600,7 +600,7 @@ local void gen_codes (tree, max_code, bl_count)
         tree[n].Code = (ush)bi_reverse(next_code[len]++, len);
 
         Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
-             n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
+            n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len] - 1));
     }
 }
 
@@ -624,7 +624,7 @@ local void build_tree(s, desc)
     int node;          /* new node being created */
 
     /* Construct the initial heap, with least frequent element in
-     * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
+     * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n + 1].
      * heap[0] is not used.
      */
     s->heap_len = 0, s->heap_max = HEAP_SIZE;
@@ -652,7 +652,7 @@ local void build_tree(s, desc)
     }
     desc->max_code = max_code;
 
-    /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
+    /* The elements heap[heap_len/2 + 1 .. heap_len] are leaves of the tree,
      * establish sub-heaps of increasing lengths:
      */
     for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n);
@@ -700,7 +700,7 @@ local void build_tree(s, desc)
  * Scan a literal or distance tree to determine the frequencies of the codes
  * in the bit length tree.
  */
-local void scan_tree (s, tree, max_code)
+local void scan_tree(s, tree, max_code)
     deflate_state *s;
     ct_data *tree;   /* the tree to be scanned */
     int max_code;    /* and its largest code of non zero frequency */
@@ -714,10 +714,10 @@ local void scan_tree (s, tree, max_code)
     int min_count = 4;         /* min repeat count */
 
     if (nextlen == 0) max_count = 138, min_count = 3;
-    tree[max_code+1].Len = (ush)0xffff; /* guard */
+    tree[max_code + 1].Len = (ush)0xffff; /* guard */
 
     for (n = 0; n <= max_code; n++) {
-        curlen = nextlen; nextlen = tree[n+1].Len;
+        curlen = nextlen; nextlen = tree[n + 1].Len;
         if (++count < max_count && curlen == nextlen) {
             continue;
         } else if (count < min_count) {
@@ -745,7 +745,7 @@ local void scan_tree (s, tree, max_code)
  * Send a literal or distance tree in compressed form, using the codes in
  * bl_tree.
  */
-local void send_tree (s, tree, max_code)
+local void send_tree(s, tree, max_code)
     deflate_state *s;
     ct_data *tree; /* the tree to be scanned */
     int max_code;       /* and its largest code of non zero frequency */
@@ -758,11 +758,11 @@ local void send_tree (s, tree, max_code)
     int max_count = 7;         /* max repeat count */
     int min_count = 4;         /* min repeat count */
 
-    /* tree[max_code+1].Len = -1; */  /* guard already set */
+    /* tree[max_code + 1].Len = -1; */  /* guard already set */
     if (nextlen == 0) max_count = 138, min_count = 3;
 
     for (n = 0; n <= max_code; n++) {
-        curlen = nextlen; nextlen = tree[n+1].Len;
+        curlen = nextlen; nextlen = tree[n + 1].Len;
         if (++count < max_count && curlen == nextlen) {
             continue;
         } else if (count < min_count) {
@@ -773,13 +773,13 @@ local void send_tree (s, tree, max_code)
                 send_code(s, curlen, s->bl_tree); count--;
             }
             Assert(count >= 3 && count <= 6, " 3_6?");
-            send_code(s, REP_3_6, s->bl_tree); send_bits(s, count-3, 2);
+            send_code(s, REP_3_6, s->bl_tree); send_bits(s, count - 3, 2);
 
         } else if (count <= 10) {
-            send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count-3, 3);
+            send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count - 3, 3);
 
         } else {
-            send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count-11, 7);
+            send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count - 11, 7);
         }
         count = 0; prevlen = curlen;
         if (nextlen == 0) {
@@ -807,8 +807,8 @@ local int build_bl_tree(s)
 
     /* Build the bit length tree: */
     build_tree(s, (tree_desc *)(&(s->bl_desc)));
-    /* opt_len now includes the length of the tree representations, except
-     * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
+    /* opt_len now includes the length of the tree representations, except the
+     * lengths of the bit lengths codes and the 5 + 5 + 4 bits for the counts.
      */
 
     /* Determine the number of bit length codes to send. The pkzip format
@@ -819,7 +819,7 @@ local int build_bl_tree(s)
         if (s->bl_tree[bl_order[max_blindex]].Len != 0) break;
     }
     /* Update opt_len to include the bit length tree and counts */
-    s->opt_len += 3*((ulg)max_blindex+1) + 5+5+4;
+    s->opt_len += 3*((ulg)max_blindex + 1) + 5 + 5 + 4;
     Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
             s->opt_len, s->static_len));
 
@@ -841,19 +841,19 @@ local void send_all_trees(s, lcodes, dcodes, blcodes)
     Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
             "too many codes");
     Tracev((stderr, "\nbl counts: "));
-    send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */
-    send_bits(s, dcodes-1,   5);
-    send_bits(s, blcodes-4,  4); /* not -3 as stated in appnote.txt */
+    send_bits(s, lcodes - 257, 5);  /* not +255 as stated in appnote.txt */
+    send_bits(s, dcodes - 1,   5);
+    send_bits(s, blcodes - 4,  4);  /* not -3 as stated in appnote.txt */
     for (rank = 0; rank < blcodes; rank++) {
         Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
         send_bits(s, s->bl_tree[bl_order[rank]].Len, 3);
     }
     Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));
 
-    send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */
+    send_tree(s, (ct_data *)s->dyn_ltree, lcodes - 1);  /* literal tree */
     Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));
 
-    send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */
+    send_tree(s, (ct_data *)s->dyn_dtree, dcodes - 1);  /* distance tree */
     Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
 }
 
@@ -866,7 +866,7 @@ void ZLIB_INTERNAL _tr_stored_block(s, buf, stored_len, last)
     ulg stored_len;   /* length of input block */
     int last;         /* one if this is the last block for a file */
 {
-    send_bits(s, (STORED_BLOCK<<1)+last, 3);    /* send block type */
+    send_bits(s, (STORED_BLOCK<<1) + last, 3);  /* send block type */
     bi_windup(s);        /* align on byte boundary */
     put_short(s, (ush)stored_len);
     put_short(s, (ush)~stored_len);
@@ -877,7 +877,7 @@ void ZLIB_INTERNAL _tr_stored_block(s, buf, stored_len, last)
     s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L;
     s->compressed_len += (stored_len + 4) << 3;
     s->bits_sent += 2*16;
-    s->bits_sent += stored_len<<3;
+    s->bits_sent += stored_len << 3;
 #endif
 }
 
@@ -943,14 +943,17 @@ void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last)
         max_blindex = build_bl_tree(s);
 
         /* Determine the best encoding. Compute the block lengths in bytes. */
-        opt_lenb = (s->opt_len+3+7)>>3;
-        static_lenb = (s->static_len+3+7)>>3;
+        opt_lenb = (s->opt_len + 3 + 7) >> 3;
+        static_lenb = (s->static_len + 3 + 7) >> 3;
 
         Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
                 opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
                 s->sym_next / 3));
 
-        if (static_lenb <= opt_lenb) opt_lenb = static_lenb;
+#ifndef FORCE_STATIC
+        if (static_lenb <= opt_lenb || s->strategy == Z_FIXED)
+#endif
+            opt_lenb = static_lenb;
 
     } else {
         Assert(buf != (char*)0, "lost buf");
@@ -960,7 +963,7 @@ void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last)
 #ifdef FORCE_STORED
     if (buf != (char*)0) { /* force stored block */
 #else
-    if (stored_len+4 <= opt_lenb && buf != (char*)0) {
+    if (stored_len + 4 <= opt_lenb && buf != (char*)0) {
                        /* 4: two words for the lengths */
 #endif
         /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
@@ -971,21 +974,17 @@ void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last)
          */
         _tr_stored_block(s, buf, stored_len, last);
 
-#ifdef FORCE_STATIC
-    } else if (static_lenb >= 0) { /* force static trees */
-#else
-    } else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) {
-#endif
-        send_bits(s, (STATIC_TREES<<1)+last, 3);
+    } else if (static_lenb == opt_lenb) {
+        send_bits(s, (STATIC_TREES<<1) + last, 3);
         compress_block(s, (const ct_data *)static_ltree,
                        (const ct_data *)static_dtree);
 #ifdef ZLIB_DEBUG
         s->compressed_len += 3 + s->static_len;
 #endif
     } else {
-        send_bits(s, (DYN_TREES<<1)+last, 3);
-        send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1,
-                       max_blindex+1);
+        send_bits(s, (DYN_TREES<<1) + last, 3);
+        send_all_trees(s, s->l_desc.max_code + 1, s->d_desc.max_code + 1,
+                       max_blindex + 1);
         compress_block(s, (const ct_data *)s->dyn_ltree,
                        (const ct_data *)s->dyn_dtree);
 #ifdef ZLIB_DEBUG
@@ -1004,22 +1003,22 @@ void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last)
         s->compressed_len += 7;  /* align on byte boundary */
 #endif
     }
-    Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
-           s->compressed_len-7*last));
+    Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len >> 3,
+           s->compressed_len - 7*last));
 }
 
 /* ===========================================================================
  * Save the match info and tally the frequency counts. Return true if
  * the current block must be flushed.
  */
-int ZLIB_INTERNAL _tr_tally (s, dist, lc)
+int ZLIB_INTERNAL _tr_tally(s, dist, lc)
     deflate_state *s;
     unsigned dist;  /* distance of matched string */
-    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */
+    unsigned lc;    /* match length - MIN_MATCH or unmatched char (dist==0) */
 {
-    s->sym_buf[s->sym_next++] = dist;
-    s->sym_buf[s->sym_next++] = dist >> 8;
-    s->sym_buf[s->sym_next++] = lc;
+    s->sym_buf[s->sym_next++] = (uch)dist;
+    s->sym_buf[s->sym_next++] = (uch)(dist >> 8);
+    s->sym_buf[s->sym_next++] = (uch)lc;
     if (dist == 0) {
         /* lc is the unmatched char */
         s->dyn_ltree[lc].Freq++;
@@ -1031,7 +1030,7 @@ int ZLIB_INTERNAL _tr_tally (s, dist, lc)
                (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
                (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");
 
-        s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++;
+        s->dyn_ltree[_length_code[lc] + LITERALS + 1].Freq++;
         s->dyn_dtree[d_code(dist)].Freq++;
     }
     return (s->sym_next == s->sym_end);
@@ -1061,7 +1060,7 @@ local void compress_block(s, ltree, dtree)
         } else {
             /* Here, lc is the match length - MIN_MATCH */
             code = _length_code[lc];
-            send_code(s, code+LITERALS+1, ltree); /* send the length code */
+            send_code(s, code + LITERALS + 1, ltree);   /* send length code */
             extra = extra_lbits[code];
             if (extra != 0) {
                 lc -= base_length[code];
@@ -1177,6 +1176,6 @@ local void bi_windup(s)
     s->bi_buf = 0;
     s->bi_valid = 0;
 #ifdef ZLIB_DEBUG
-    s->bits_sent = (s->bits_sent+7) & ~7;
+    s->bits_sent = (s->bits_sent + 7) & ~7;
 #endif
 }
diff --git a/zlib/uncompr.c b/zlib/uncompr.c
index f03a1a865..f9532f46c 100644
--- a/zlib/uncompr.c
+++ b/zlib/uncompr.c
@@ -24,7 +24,7 @@
    Z_DATA_ERROR if the input data was corrupted, including if the input data is
    an incomplete zlib stream.
 */
-int ZEXPORT uncompress2 (dest, destLen, source, sourceLen)
+int ZEXPORT uncompress2(dest, destLen, source, sourceLen)
     Bytef *dest;
     uLongf *destLen;
     const Bytef *source;
@@ -83,7 +83,7 @@ int ZEXPORT uncompress2 (dest, destLen, source, sourceLen)
            err;
 }
 
-int ZEXPORT uncompress (dest, destLen, source, sourceLen)
+int ZEXPORT uncompress(dest, destLen, source, sourceLen)
     Bytef *dest;
     uLongf *destLen;
     const Bytef *source;
diff --git a/zlib/win32/README-WIN32.txt b/zlib/win32/README-WIN32.txt
index 536cfec6f..050197d80 100644
--- a/zlib/win32/README-WIN32.txt
+++ b/zlib/win32/README-WIN32.txt
@@ -1,6 +1,6 @@
 ZLIB DATA COMPRESSION LIBRARY
 
-zlib 1.2.12 is a general purpose data compression library.  All the code is
+zlib 1.2.13 is a general purpose data compression library.  All the code is
 thread safe.  The data format used by the zlib library is described by RFCs
 (Request for Comments) 1950 to 1952 in the files
 http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)
@@ -22,7 +22,7 @@ before asking for help.
 
 Manifest:
 
-The package zlib-1.2.12-win32-x86.zip will contain the following files:
+The package zlib-1.2.13-win32-x86.zip will contain the following files:
 
   README-WIN32.txt This document
   ChangeLog        Changes since previous zlib packages
diff --git a/zlib/win32/zlib1.rc b/zlib/win32/zlib1.rc
index 234e641c3..ceb4ee5c6 100644
--- a/zlib/win32/zlib1.rc
+++ b/zlib/win32/zlib1.rc
@@ -26,7 +26,7 @@ BEGIN
       VALUE "FileDescription",	"zlib data compression library\0"
       VALUE "FileVersion",	ZLIB_VERSION "\0"
       VALUE "InternalName",	"zlib1.dll\0"
-      VALUE "LegalCopyright",	"(C) 1995-2017 Jean-loup Gailly & Mark Adler\0"
+      VALUE "LegalCopyright",	"(C) 1995-2022 Jean-loup Gailly & Mark Adler\0"
       VALUE "OriginalFilename",	"zlib1.dll\0"
       VALUE "ProductName",	"zlib\0"
       VALUE "ProductVersion",	ZLIB_VERSION "\0"
diff --git a/zlib/zconf.h b/zlib/zconf.h
index 5e1d68a00..bf977d3e7 100644
--- a/zlib/zconf.h
+++ b/zlib/zconf.h
@@ -38,6 +38,9 @@
 #  define crc32                 z_crc32
 #  define crc32_combine         z_crc32_combine
 #  define crc32_combine64       z_crc32_combine64
+#  define crc32_combine_gen     z_crc32_combine_gen
+#  define crc32_combine_gen64   z_crc32_combine_gen64
+#  define crc32_combine_op      z_crc32_combine_op
 #  define crc32_z               z_crc32_z
 #  define deflate               z_deflate
 #  define deflateBound          z_deflateBound
@@ -349,6 +352,9 @@
 #    ifdef FAR
 #      undef FAR
 #    endif
+#    ifndef WIN32_LEAN_AND_MEAN
+#      define WIN32_LEAN_AND_MEAN
+#    endif
 #    include <windows.h>
      /* No need for _export, use ZLIB.DEF instead. */
      /* For complete Windows compatibility, use WINAPI, not __stdcall. */
@@ -467,11 +473,18 @@ typedef uLong FAR uLongf;
 #  undef _LARGEFILE64_SOURCE
 #endif
 
-#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
-#  define Z_HAVE_UNISTD_H
+#ifndef Z_HAVE_UNISTD_H
+#  ifdef __WATCOMC__
+#    define Z_HAVE_UNISTD_H
+#  endif
+#endif
+#ifndef Z_HAVE_UNISTD_H
+#  if defined(_LARGEFILE64_SOURCE) && !defined(_WIN32)
+#    define Z_HAVE_UNISTD_H
+#  endif
 #endif
 #ifndef Z_SOLO
-#  if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
+#  if defined(Z_HAVE_UNISTD_H)
 #    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
 #    ifdef VMS
 #      include <unixio.h>       /* for off_t */
diff --git a/zlib/zconf.h.cmakein b/zlib/zconf.h.cmakein
index a7f24cce6..247ba2461 100644
--- a/zlib/zconf.h.cmakein
+++ b/zlib/zconf.h.cmakein
@@ -40,6 +40,9 @@
 #  define crc32                 z_crc32
 #  define crc32_combine         z_crc32_combine
 #  define crc32_combine64       z_crc32_combine64
+#  define crc32_combine_gen     z_crc32_combine_gen
+#  define crc32_combine_gen64   z_crc32_combine_gen64
+#  define crc32_combine_op      z_crc32_combine_op
 #  define crc32_z               z_crc32_z
 #  define deflate               z_deflate
 #  define deflateBound          z_deflateBound
@@ -351,6 +354,9 @@
 #    ifdef FAR
 #      undef FAR
 #    endif
+#    ifndef WIN32_LEAN_AND_MEAN
+#      define WIN32_LEAN_AND_MEAN
+#    endif
 #    include <windows.h>
      /* No need for _export, use ZLIB.DEF instead. */
      /* For complete Windows compatibility, use WINAPI, not __stdcall. */
@@ -469,11 +475,18 @@ typedef uLong FAR uLongf;
 #  undef _LARGEFILE64_SOURCE
 #endif
 
-#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
-#  define Z_HAVE_UNISTD_H
+#ifndef Z_HAVE_UNISTD_H
+#  ifdef __WATCOMC__
+#    define Z_HAVE_UNISTD_H
+#  endif
+#endif
+#ifndef Z_HAVE_UNISTD_H
+#  if defined(_LARGEFILE64_SOURCE) && !defined(_WIN32)
+#    define Z_HAVE_UNISTD_H
+#  endif
 #endif
 #ifndef Z_SOLO
-#  if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
+#  if defined(Z_HAVE_UNISTD_H)
 #    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
 #    ifdef VMS
 #      include <unixio.h>       /* for off_t */
diff --git a/zlib/zconf.h.in b/zlib/zconf.h.in
index 5e1d68a00..bf977d3e7 100644
--- a/zlib/zconf.h.in
+++ b/zlib/zconf.h.in
@@ -38,6 +38,9 @@
 #  define crc32                 z_crc32
 #  define crc32_combine         z_crc32_combine
 #  define crc32_combine64       z_crc32_combine64
+#  define crc32_combine_gen     z_crc32_combine_gen
+#  define crc32_combine_gen64   z_crc32_combine_gen64
+#  define crc32_combine_op      z_crc32_combine_op
 #  define crc32_z               z_crc32_z
 #  define deflate               z_deflate
 #  define deflateBound          z_deflateBound
@@ -349,6 +352,9 @@
 #    ifdef FAR
 #      undef FAR
 #    endif
+#    ifndef WIN32_LEAN_AND_MEAN
+#      define WIN32_LEAN_AND_MEAN
+#    endif
 #    include <windows.h>
      /* No need for _export, use ZLIB.DEF instead. */
      /* For complete Windows compatibility, use WINAPI, not __stdcall. */
@@ -467,11 +473,18 @@ typedef uLong FAR uLongf;
 #  undef _LARGEFILE64_SOURCE
 #endif
 
-#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
-#  define Z_HAVE_UNISTD_H
+#ifndef Z_HAVE_UNISTD_H
+#  ifdef __WATCOMC__
+#    define Z_HAVE_UNISTD_H
+#  endif
+#endif
+#ifndef Z_HAVE_UNISTD_H
+#  if defined(_LARGEFILE64_SOURCE) && !defined(_WIN32)
+#    define Z_HAVE_UNISTD_H
+#  endif
 #endif
 #ifndef Z_SOLO
-#  if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
+#  if defined(Z_HAVE_UNISTD_H)
 #    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
 #    ifdef VMS
 #      include <unixio.h>       /* for off_t */
diff --git a/zlib/zlib.3 b/zlib/zlib.3
index bcaebd9f0..6f6e91404 100644
--- a/zlib/zlib.3
+++ b/zlib/zlib.3
@@ -1,4 +1,4 @@
-.TH ZLIB 3 "27 Mar 2022"
+.TH ZLIB 3 "13 Oct 2022"
 .SH NAME
 zlib \- compression/decompression library
 .SH SYNOPSIS
@@ -105,7 +105,7 @@ before asking for help.
 Send questions and/or comments to zlib@gzip.org,
 or (for the Windows DLL version) to Gilles Vollant (info@winimage.com).
 .SH AUTHORS AND LICENSE
-Version 1.2.12
+Version 1.2.13
 .LP
 Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler
 .LP
diff --git a/zlib/zlib.3.pdf b/zlib/zlib.3.pdf
index 54d677ab0..8132d840c 100644
--- a/zlib/zlib.3.pdf
+++ b/zlib/zlib.3.pdf
diff --git a/zlib/zlib.h b/zlib/zlib.h
index 4a98e38bf..953cb5012 100644
--- a/zlib/zlib.h
+++ b/zlib/zlib.h
@@ -1,5 +1,5 @@
 /* zlib.h -- interface of the 'zlib' general purpose compression library
-  version 1.2.12, March 11th, 2022
+  version 1.2.13, October 13th, 2022
 
   Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler
 
@@ -37,11 +37,11 @@
 extern "C" {
 #endif
 
-#define ZLIB_VERSION "1.2.12"
-#define ZLIB_VERNUM 0x12c0
+#define ZLIB_VERSION "1.2.13"
+#define ZLIB_VERNUM 0x12d0
 #define ZLIB_VER_MAJOR 1
 #define ZLIB_VER_MINOR 2
-#define ZLIB_VER_REVISION 12
+#define ZLIB_VER_REVISION 13
 #define ZLIB_VER_SUBREVISION 0
 
 /*
@@ -276,7 +276,7 @@ ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
   == 0), or after each call of deflate().  If deflate returns Z_OK and with
   zero avail_out, it must be called again after making room in the output
   buffer because there might be more output pending. See deflatePending(),
-  which can be used if desired to determine whether or not there is more ouput
+  which can be used if desired to determine whether or not there is more output
   in that case.
 
     Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to
@@ -660,7 +660,7 @@ ZEXTERN int ZEXPORT deflateGetDictionary OF((z_streamp strm,
    to dictionary.  dictionary must have enough space, where 32768 bytes is
    always enough.  If deflateGetDictionary() is called with dictionary equal to
    Z_NULL, then only the dictionary length is returned, and nothing is copied.
-   Similary, if dictLength is Z_NULL, then it is not set.
+   Similarly, if dictLength is Z_NULL, then it is not set.
 
      deflateGetDictionary() may return a length less than the window size, even
    when more than the window size in input has been provided. It may return up
@@ -915,7 +915,7 @@ ZEXTERN int ZEXPORT inflateGetDictionary OF((z_streamp strm,
    to dictionary.  dictionary must have enough space, where 32768 bytes is
    always enough.  If inflateGetDictionary() is called with dictionary equal to
    Z_NULL, then only the dictionary length is returned, and nothing is copied.
-   Similary, if dictLength is Z_NULL, then it is not set.
+   Similarly, if dictLength is Z_NULL, then it is not set.
 
      inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the
    stream state is inconsistent.
@@ -1437,12 +1437,12 @@ ZEXTERN z_size_t ZEXPORT gzfread OF((voidp buf, z_size_t size, z_size_t nitems,
 
      In the event that the end of file is reached and only a partial item is
    available at the end, i.e. the remaining uncompressed data length is not a
-   multiple of size, then the final partial item is nevetheless read into buf
+   multiple of size, then the final partial item is nevertheless read into buf
    and the end-of-file flag is set.  The length of the partial item read is not
    provided, but could be inferred from the result of gztell().  This behavior
    is the same as the behavior of fread() implementations in common libraries,
    but it prevents the direct use of gzfread() to read a concurrently written
-   file, reseting and retrying on end-of-file, when size is not 1.
+   file, resetting and retrying on end-of-file, when size is not 1.
 */
 
 ZEXTERN int ZEXPORT gzwrite OF((gzFile file, voidpc buf, unsigned len));
@@ -1913,7 +1913,7 @@ ZEXTERN int            ZEXPORT inflateSyncPoint OF((z_streamp));
 ZEXTERN const z_crc_t FAR * ZEXPORT get_crc_table    OF((void));
 ZEXTERN int            ZEXPORT inflateUndermine OF((z_streamp, int));
 ZEXTERN int            ZEXPORT inflateValidate OF((z_streamp, int));
-ZEXTERN unsigned long  ZEXPORT inflateCodesUsed OF ((z_streamp));
+ZEXTERN unsigned long  ZEXPORT inflateCodesUsed OF((z_streamp));
 ZEXTERN int            ZEXPORT inflateResetKeep OF((z_streamp));
 ZEXTERN int            ZEXPORT deflateResetKeep OF((z_streamp));
 #if defined(_WIN32) && !defined(Z_SOLO)
diff --git a/zlib/zlib2ansi b/zlib/zlib2ansi
index 15e3e165f..23b2a1d5a 100755
--- a/zlib/zlib2ansi
+++ b/zlib/zlib2ansi
@@ -8,7 +8,7 @@
 
 # TODO
 #
-# Asumes no function pointer parameters. unless they are typedefed.
+# Assumes no function pointer parameters. unless they are typedefed.
 # Assumes no literal strings that look like function definitions
 # Assumes functions start at the beginning of a line
 
@@ -104,7 +104,7 @@ sub StripComments
 
   no warnings;
 
-  # Strip C & C++ coments
+  # Strip C & C++ comments
   # From the perlfaq
   $_[0] =~
 
diff --git a/zlib/zutil.c b/zlib/zutil.c
index dcab28a0d..9543ae825 100644
--- a/zlib/zutil.c
+++ b/zlib/zutil.c
@@ -61,9 +61,11 @@ uLong ZEXPORT zlibCompileFlags()
 #ifdef ZLIB_DEBUG
     flags += 1 << 8;
 #endif
+    /*
 #if defined(ASMV) || defined(ASMINF)
     flags += 1 << 9;
 #endif
+     */
 #ifdef ZLIB_WINAPI
     flags += 1 << 10;
 #endif
@@ -119,7 +121,7 @@ uLong ZEXPORT zlibCompileFlags()
 #  endif
 int ZLIB_INTERNAL z_verbose = verbose;
 
-void ZLIB_INTERNAL z_error (m)
+void ZLIB_INTERNAL z_error(m)
     char *m;
 {
     fprintf(stderr, "%s\n", m);
@@ -214,7 +216,7 @@ local ptr_table table[MAX_PTR];
  * a protected system like OS/2. Use Microsoft C instead.
  */
 
-voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size)
+voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, unsigned size)
 {
     voidpf buf;
     ulg bsize = (ulg)items*size;
@@ -240,7 +242,7 @@ voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size)
     return buf;
 }
 
-void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
+void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr)
 {
     int n;
 
@@ -277,13 +279,13 @@ void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
 #  define _hfree   hfree
 #endif
 
-voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size)
+voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, uInt items, uInt size)
 {
     (void)opaque;
     return _halloc((long)items, size);
 }
 
-void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
+void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr)
 {
     (void)opaque;
     _hfree(ptr);
@@ -302,7 +304,7 @@ extern voidp  calloc OF((uInt items, uInt size));
 extern void   free   OF((voidpf ptr));
 #endif
 
-voidpf ZLIB_INTERNAL zcalloc (opaque, items, size)
+voidpf ZLIB_INTERNAL zcalloc(opaque, items, size)
     voidpf opaque;
     unsigned items;
     unsigned size;
@@ -312,7 +314,7 @@ voidpf ZLIB_INTERNAL zcalloc (opaque, items, size)
                               (voidpf)calloc(items, size);
 }
 
-void ZLIB_INTERNAL zcfree (opaque, ptr)
+void ZLIB_INTERNAL zcfree(opaque, ptr)
     voidpf opaque;
     voidpf ptr;
 {
diff --git a/zlib/zutil.h b/zlib/zutil.h
index d9a20ae1b..0bc7f4ecd 100644
--- a/zlib/zutil.h
+++ b/zlib/zutil.h
@@ -193,6 +193,7 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
     (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
     ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
     ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
+    ZEXTERN uLong ZEXPORT crc32_combine_gen64 OF((z_off_t));
 #endif
 
         /* common defaults */