* Merge from mainline rev 181122.transactional-memory

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/transactional-memory@181148 138bc75d-0d04-0410-961f-82ee72b054a4

5 files changed, 74 insertions, 9 deletions

diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog
index 64ed4683669..8f7d494fc91 100644
--- a/libcpp/ChangeLog
+++ b/libcpp/ChangeLog
@@ -1,3 +1,20 @@
+2011-11-03  Michael Matz  <matz@suse.de>
+
+	PR bootstrap/50857
+	* configure.ac: Check for -fno-exceptions -fno-rtti.
+	* configure: Regenerate.
+	* Makefile.in (NOEXCEPTION_FLAGS): New flag.
+	(ALL_CXXFLAGS): Use it.
+
+2011-11-02  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* internal.h (uxstrdup, ustrchr): Return const unsigned char *.
+
+2011-11-02  Jason Merrill  <jason@redhat.com>
+
+	PR c++/50810
+	* configure.ac: Add -Wno-narrowing to warning options.
+
 2011-10-31  Jason Merrill  <jason@redhat.com>
 
 	PR libstdc++/1773
diff --git a/libcpp/Makefile.in b/libcpp/Makefile.in
index 33c44b542df..d6df46d62c9 100644
--- a/libcpp/Makefile.in
+++ b/libcpp/Makefile.in
@@ -56,6 +56,7 @@ XGETTEXT = @XGETTEXT@
 CCDEPMODE = @CCDEPMODE@
 CXXDEPMODE = @CXXDEPMODE@
 DEPDIR = @DEPDIR@
+NOEXCEPTION_FLAGS = @noexception_flags@
 
 datarootdir = @datarootdir@
 datadir = @datadir@
@@ -72,7 +73,8 @@ INCLUDES = -I$(srcdir) -I. -I$(srcdir)/../include @INCINTL@ \
 	-I$(srcdir)/include
 
 ALL_CFLAGS = $(CFLAGS) $(WARN_CFLAGS) $(INCLUDES) $(CPPFLAGS)
-ALL_CXXFLAGS = $(CXXFLAGS) $(WARN_CXXFLAGS) $(INCLUDES) $(CPPFLAGS)
+ALL_CXXFLAGS = $(CXXFLAGS) $(WARN_CXXFLAGS) $(NOEXCEPTION_FLAGS) $(INCLUDES) \
+	$(CPPFLAGS)
 
 # The name of the compiler to use.
 ENABLE_BUILD_WITH_CXX = @ENABLE_BUILD_WITH_CXX@
diff --git a/libcpp/configure b/libcpp/configure
index c400d23a93d..803daae2b2e 100755
--- a/libcpp/configure
+++ b/libcpp/configure
@@ -616,6 +616,7 @@ CCDEPMODE
 DEPDIR
 am__leading_dot
 WERROR
+noexception_flags
 WARN_PEDANTIC
 c_warn
 warn
@@ -4687,7 +4688,7 @@ test -n "$AUTOHEADER" || AUTOHEADER="$MISSING autoheader"
 
 warn=
 save_CFLAGS="$CFLAGS"
-for option in -W -Wall -Wwrite-strings \
+for option in -W -Wall -Wno-narrowing -Wwrite-strings \
 			  -Wmissing-format-attribute; do
   as_acx_Woption=`$as_echo "acx_cv_prog_cc_warning_$option" | $as_tr_sh`
 
@@ -4802,6 +4803,47 @@ fi
 fi
 
 
+# Disable exceptions and RTTI if building with g++
+noexception_flags=
+save_CFLAGS="$CFLAGS"
+for option in -fno-exceptions -fno-rtti; do
+  as_acx_Woption=`$as_echo "acx_cv_prog_cc_warning_$option" | $as_tr_sh`
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports $option" >&5
+$as_echo_n "checking whether $CC supports $option... " >&6; }
+if { as_var=$as_acx_Woption; eval "test \"\${$as_var+set}\" = set"; }; then :
+  $as_echo_n "(cached) " >&6
+else
+  CFLAGS="$option"
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$as_acx_Woption=yes"
+else
+  eval "$as_acx_Woption=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+eval ac_res=\$$as_acx_Woption
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  if test `eval 'as_val=${'$as_acx_Woption'};$as_echo "$as_val"'` = yes; then :
+  noexception_flags="$noexception_flags${noexception_flags:+ }$option"
+fi
+  done
+CFLAGS="$save_CFLAGS"
+
+
 # Only enable with --enable-werror-always until existing warnings are
 # corrected.
 WERROR=
diff --git a/libcpp/configure.ac b/libcpp/configure.ac
index e1d88511c78..83d5bb6e827 100644
--- a/libcpp/configure.ac
+++ b/libcpp/configure.ac
@@ -33,12 +33,16 @@ AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader])
 # Figure out what compiler warnings we can enable.
 # See config/warnings.m4 for details.
 
-ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings \
+ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wno-narrowing -Wwrite-strings \
 			  -Wmissing-format-attribute], [warn])
 ACX_PROG_CC_WARNING_OPTS([-Wstrict-prototypes -Wmissing-prototypes \
 			  -Wold-style-definition -Wc++-compat], [c_warn])
 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long])
 
+# Disable exceptions and RTTI if building with g++
+ACX_PROG_CC_WARNING_OPTS(
+       m4_quote(m4_do([-fno-exceptions -fno-rtti])), [noexception_flags])
+
 # Only enable with --enable-werror-always until existing warnings are
 # corrected.
 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])
diff --git a/libcpp/internal.h b/libcpp/internal.h
index e60330df490..b3dc2df10bf 100644
--- a/libcpp/internal.h
+++ b/libcpp/internal.h
@@ -739,8 +739,8 @@ static inline int ustrcmp (const unsigned char *, const unsigned char *);
 static inline int ustrncmp (const unsigned char *, const unsigned char *,
 			    size_t);
 static inline size_t ustrlen (const unsigned char *);
-static inline unsigned char *uxstrdup (const unsigned char *);
-static inline unsigned char *ustrchr (const unsigned char *, int);
+static inline const unsigned char *uxstrdup (const unsigned char *);
+static inline const unsigned char *ustrchr (const unsigned char *, int);
 static inline int ufputs (const unsigned char *, FILE *);
 
 /* Use a const char for the second parameter since it is usually a literal.  */
@@ -770,16 +770,16 @@ ustrlen (const unsigned char *s1)
   return strlen ((const char *)s1);
 }
 
-static inline unsigned char *
+static inline const unsigned char *
 uxstrdup (const unsigned char *s1)
 {
-  return (unsigned char *) xstrdup ((const char *)s1);
+  return (const unsigned char *) xstrdup ((const char *)s1);
 }
 
-static inline unsigned char *
+static inline const unsigned char *
 ustrchr (const unsigned char *s1, int c)
 {
-  return (unsigned char *) strchr ((const char *)s1, c);
+  return (const unsigned char *) strchr ((const char *)s1, c);
 }
 
 static inline int