Update gnulib files.

13 files changed, 230 insertions, 89 deletions

diff --git a/gl/Makefile.am b/gl/Makefile.am
index 203a514a0a..cdcb1cbd7a 100644
--- a/gl/Makefile.am
+++ b/gl/Makefile.am
@@ -748,6 +748,7 @@ stdio.h: stdio.in.h $(WARN_ON_USE_H) $(ARG_NONNULL_H)
 	      -e 's|@''REPLACE_FSEEKO''@|$(REPLACE_FSEEKO)|g' \
 	      -e 's|@''REPLACE_FTELL''@|$(REPLACE_FTELL)|g' \
 	      -e 's|@''REPLACE_FTELLO''@|$(REPLACE_FTELLO)|g' \
+	      -e 's|@''REPLACE_GETDELIM''@|$(REPLACE_GETDELIM)|g' \
 	      -e 's|@''REPLACE_GETLINE''@|$(REPLACE_GETLINE)|g' \
 	      -e 's|@''REPLACE_OBSTACK_PRINTF''@|$(REPLACE_OBSTACK_PRINTF)|g' \
 	      -e 's|@''REPLACE_PERROR''@|$(REPLACE_PERROR)|g' \
@@ -1078,11 +1079,11 @@ EXTRA_DIST += sys_stat.in.h
 
 ## begin gnulib module sys_time
 
-BUILT_SOURCES += $(SYS_TIME_H)
+BUILT_SOURCES += sys/time.h
 
 # We need the following in order to create <sys/time.h> when the system
 # doesn't have one that works with the given compiler.
-sys/time.h: sys_time.in.h $(ARG_NONNULL_H)
+sys/time.h: sys_time.in.h $(WARN_ON_USE_H) $(ARG_NONNULL_H)
 	$(AM_V_at)$(MKDIR_P) sys
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
@@ -1090,9 +1091,11 @@ sys/time.h: sys_time.in.h $(ARG_NONNULL_H)
 	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
 	      -e 's|@''NEXT_SYS_TIME_H''@|$(NEXT_SYS_TIME_H)|g' \
-	      -e 's/@''REPLACE_GETTIMEOFDAY''@/$(REPLACE_GETTIMEOFDAY)/g' \
+	      -e 's/@''GNULIB_GETTIMEOFDAY''@/$(GNULIB_GETTIMEOFDAY)/g' \
 	      -e 's/@''HAVE_STRUCT_TIMEVAL''@/$(HAVE_STRUCT_TIMEVAL)/g' \
+	      -e 's/@''REPLACE_GETTIMEOFDAY''@/$(REPLACE_GETTIMEOFDAY)/g' \
 	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
 	      < $(srcdir)/sys_time.in.h; \
 	} > $@-t && \
 	mv $@-t $@
diff --git a/gl/m4/getdelim.m4 b/gl/m4/getdelim.m4
index 9e5ad5baaf..4beb1501c2 100644
--- a/gl/m4/getdelim.m4
+++ b/gl/m4/getdelim.m4
@@ -1,6 +1,6 @@
-# getdelim.m4 serial 5
+# getdelim.m4 serial 6
 
-dnl Copyright (C) 2005, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2007, 2009-2010 Free Software Foundation, Inc.
 dnl
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -15,16 +15,71 @@ AC_DEFUN([gl_FUNC_GETDELIM],
   dnl Persuade glibc <stdio.h> to declare getdelim().
   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
 
-  AC_REPLACE_FUNCS([getdelim])
   AC_CHECK_DECLS_ONCE([getdelim])
 
-  if test $ac_cv_func_getdelim = no; then
-    gl_PREREQ_GETDELIM
+  AC_CHECK_FUNCS_ONCE([getdelim])
+  if test $ac_cv_func_getdelim = yes; then
+    dnl Found it in some library.  Verify that it works.
+    AC_CACHE_CHECK([for working getdelim function], [gl_cv_func_working_getdelim],
+    [echo fooNbarN | tr -d '\012' | tr N '\012' > conftest.data
+    AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#    include <stdio.h>
+#    include <stdlib.h>
+#    include <string.h>
+    int main ()
+    {
+      FILE *in = fopen ("./conftest.data", "r");
+      if (!in)
+        return 1;
+      {
+        /* Test result for a NULL buffer and a zero size.
+           Based on a test program from Karl Heuer.  */
+        char *line = NULL;
+        size_t siz = 0;
+        int len = getdelim (&line, &siz, '\n', in);
+        if (!(len == 4 && line && strcmp (line, "foo\n") == 0))
+          return 1;
+      }
+      {
+        /* Test result for a NULL buffer and a non-zero size.
+           This crashes on FreeBSD 8.0.  */
+        char *line = NULL;
+        size_t siz = (size_t)(~0) / 4;
+        if (getdelim (&line, &siz, '\n', in) == -1)
+          return 1;
+      }
+      return 0;
+    }
+    ]])], [gl_cv_func_working_getdelim=yes] dnl The library version works.
+    , [gl_cv_func_working_getdelim=no] dnl The library version does NOT work.
+    , dnl We're cross compiling. Assume it works on glibc2 systems.
+      [AC_EGREP_CPP([Lucky GNU user],
+         [
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if (__GLIBC__ >= 2)
+  Lucky GNU user
+ #endif
+#endif
+         ],
+         [gl_cv_func_working_getdelim=yes],
+         [gl_cv_func_working_getdelim=no])]
+    )])
+  else
+    gl_cv_func_working_getdelim=no
   fi
 
   if test $ac_cv_have_decl_getdelim = no; then
     HAVE_DECL_GETDELIM=0
   fi
+
+  if test $gl_cv_func_working_getdelim = no; then
+    if test $ac_cv_func_getdelim = yes; then
+      REPLACE_GETDELIM=1
+    fi
+    AC_LIBOBJ([getdelim])
+    gl_PREREQ_GETDELIM
+  fi
 ])
 
 # Prerequisites of lib/getdelim.c.
diff --git a/gl/m4/getline.m4 b/gl/m4/getline.m4
index 5b8a712fbc..83005600d6 100644
--- a/gl/m4/getline.m4
+++ b/gl/m4/getline.m4
@@ -1,4 +1,4 @@
-# getline.m4 serial 20
+# getline.m4 serial 21
 
 dnl Copyright (C) 1998-2003, 2005-2007, 2009-2010 Free Software Foundation,
 dnl Inc.
@@ -24,26 +24,39 @@ AC_DEFUN([gl_FUNC_GETLINE],
 
   gl_getline_needs_run_time_check=no
   AC_CHECK_FUNC([getline],
-                dnl Found it in some library.  Verify that it works.
-                gl_getline_needs_run_time_check=yes,
-                am_cv_func_working_getline=no)
+                [dnl Found it in some library.  Verify that it works.
+                 gl_getline_needs_run_time_check=yes],
+                [am_cv_func_working_getline=no])
   if test $gl_getline_needs_run_time_check = yes; then
     AC_CACHE_CHECK([for working getline function], [am_cv_func_working_getline],
-    [echo fooN |tr -d '\012'|tr N '\012' > conftest.data
+    [echo fooNbarN | tr -d '\012' | tr N '\012' > conftest.data
     AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #    include <stdio.h>
 #    include <stdlib.h>
 #    include <string.h>
     int main ()
-    { /* Based on a test program from Karl Heuer.  */
-      char *line = NULL;
-      size_t siz = 0;
-      int len;
+    {
       FILE *in = fopen ("./conftest.data", "r");
       if (!in)
         return 1;
-      len = getline (&line, &siz, in);
-      exit ((len == 4 && line && strcmp (line, "foo\n") == 0) ? 0 : 1);
+      {
+        /* Test result for a NULL buffer and a zero size.
+           Based on a test program from Karl Heuer.  */
+        char *line = NULL;
+        size_t siz = 0;
+        int len = getline (&line, &siz, in);
+        if (!(len == 4 && line && strcmp (line, "foo\n") == 0))
+          return 1;
+      }
+      {
+        /* Test result for a NULL buffer and a non-zero size.
+           This crashes on FreeBSD 8.0.  */
+        char *line = NULL;
+        size_t siz = (size_t)(~0) / 4;
+        if (getline (&line, &siz, in) == -1)
+          return 1;
+      }
+      return 0;
     }
     ]])], [am_cv_func_working_getline=yes] dnl The library version works.
     , [am_cv_func_working_getline=no] dnl The library version does NOT work.
@@ -67,6 +80,9 @@ AC_DEFUN([gl_FUNC_GETLINE],
   fi
 
   if test $am_cv_func_working_getline = no; then
+    dnl Set REPLACE_GETLINE always: Even if we have not found the broken
+    dnl getline function among $LIBS, it may exist in libinet and the
+    dnl executable may be linked with -linet.
     REPLACE_GETLINE=1
     AC_LIBOBJ([getline])
 
diff --git a/gl/m4/gettimeofday.m4 b/gl/m4/gettimeofday.m4
index 735123e6dc..32e4f29a9f 100644
--- a/gl/m4/gettimeofday.m4
+++ b/gl/m4/gettimeofday.m4
@@ -1,4 +1,4 @@
-# serial 12
+# serial 14
 
 # Copyright (C) 2001-2003, 2005, 2007, 2009-2010 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
@@ -11,33 +11,49 @@ AC_DEFUN([gl_FUNC_GETTIMEOFDAY],
 [
   AC_REQUIRE([AC_C_RESTRICT])
   AC_REQUIRE([gl_HEADER_SYS_TIME_H])
+  AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS])
   AC_CHECK_FUNCS_ONCE([gettimeofday])
 
-  AC_CACHE_CHECK([for gettimeofday with POSIX signature],
-    [gl_cv_func_gettimeofday_posix_signature],
-    [AC_COMPILE_IFELSE(
-       [AC_LANG_PROGRAM(
-          [[#include <sys/time.h>
-            struct timeval c;
-          ]],
-          [[
-            int (*f) (struct timeval *restrict, void *restrict) = gettimeofday;
-            int x = f (&c, 0);
-            return !(x | c.tv_sec | c.tv_usec);
-          ]])],
-        [gl_cv_func_gettimeofday_posix_signature=yes],
-        [gl_cv_func_gettimeofday_posix_signature=no])])
-
-  gl_FUNC_GETTIMEOFDAY_CLOBBER
-
-  if test $gl_cv_func_gettimeofday_posix_signature != yes; then
-    REPLACE_GETTIMEOFDAY=1
-    SYS_TIME_H=sys/time.h
-    if test $gl_cv_func_gettimeofday_clobber != yes; then
+  gl_gettimeofday_timezone=void
+  if test $ac_cv_func_gettimeofday = yes; then
+    gl_FUNC_GETTIMEOFDAY_CLOBBER
+    AC_CACHE_CHECK([for gettimeofday with POSIX signature],
+      [gl_cv_func_gettimeofday_posix_signature],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <sys/time.h>
+              struct timeval c;
+              int gettimeofday (struct timeval *restrict, void *restrict);
+            ]],
+            [[/* glibc uses struct timezone * rather than the POSIX void *
+                 if _GNU_SOURCE is defined.  However, since the only portable
+                 use of gettimeofday uses NULL as the second parameter, and
+                 since the glibc definition is actually more typesafe, it is
+                 not worth wrapping this to get a compliant signature.  */
+              int (*f) (struct timeval *restrict, void *restrict)
+                = gettimeofday;
+              int x = f (&c, 0);
+              return !(x | c.tv_sec | c.tv_usec);
+            ]])],
+          [gl_cv_func_gettimeofday_posix_signature=yes],
+          [AC_COMPILE_IFELSE(
+            [AC_LANG_PROGRAM(
+              [[#include <sys/time.h>
+int gettimeofday (struct timeval *restrict, struct timezone *restrict);
+              ]])],
+            [gl_cv_func_gettimeofday_posix_signature=almost],
+            [gl_cv_func_gettimeofday_posix_signature=no])])])
+    if test $gl_cv_func_gettimeofday_posix_signature = almost; then
+      gl_gettimeofday_timezone='struct timezone'
+    elif test $gl_cv_func_gettimeofday_posix_signature != yes; then
+      REPLACE_GETTIMEOFDAY=1
       AC_LIBOBJ([gettimeofday])
       gl_PREREQ_GETTIMEOFDAY
     fi
   fi
+  AC_DEFINE_UNQUOTED([GETTIMEOFDAY_TIMEZONE], [$gl_gettimeofday_timezone],
+    [Define this to 'void' or 'struct timezone' to match the system's
+     declaration of the second argument to gettimeofday.])
 ])
 
 
@@ -78,7 +94,6 @@ AC_DEFUN([gl_FUNC_GETTIMEOFDAY_CLOBBER],
 
  if test $gl_cv_func_gettimeofday_clobber = yes; then
    REPLACE_GETTIMEOFDAY=1
-   SYS_TIME_H=sys/time.h
    gl_GETTIMEOFDAY_REPLACE_LOCALTIME
    AC_DEFINE([GETTIMEOFDAY_CLOBBERS_LOCALTIME], [1],
      [Define if gettimeofday clobbers the localtime buffer.])
diff --git a/gl/m4/gnulib-comp.m4 b/gl/m4/gnulib-comp.m4
index 9ee2c0a593..4f08319901 100644
--- a/gl/m4/gnulib-comp.m4
+++ b/gl/m4/gnulib-comp.m4
@@ -238,6 +238,7 @@ AC_SUBST([LTALLOCA])
   gl_source_base='gl/tests'
   gl_FUNC_UNGETC_WORKS
   gl_FUNC_GETTIMEOFDAY
+  gl_SYS_TIME_MODULE_INDICATOR([gettimeofday])
   AC_C_BIGENDIAN
   AC_C_BIGENDIAN
   AC_REQUIRE([gl_HEADER_SYS_SOCKET])
diff --git a/gl/m4/stdio_h.m4 b/gl/m4/stdio_h.m4
index 20af579d14..781fa8d388 100644
--- a/gl/m4/stdio_h.m4
+++ b/gl/m4/stdio_h.m4
@@ -1,4 +1,4 @@
-# stdio_h.m4 serial 24
+# stdio_h.m4 serial 25
 dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -111,6 +111,7 @@ AC_DEFUN([gl_STDIO_H_DEFAULTS],
   REPLACE_FSEEKO=0;              AC_SUBST([REPLACE_FSEEKO])
   REPLACE_FTELL=0;               AC_SUBST([REPLACE_FTELL])
   REPLACE_FTELLO=0;              AC_SUBST([REPLACE_FTELLO])
+  REPLACE_GETDELIM=0;            AC_SUBST([REPLACE_GETDELIM])
   REPLACE_GETLINE=0;             AC_SUBST([REPLACE_GETLINE])
   REPLACE_OBSTACK_PRINTF=0;      AC_SUBST([REPLACE_OBSTACK_PRINTF])
   REPLACE_PERROR=0;              AC_SUBST([REPLACE_PERROR])
diff --git a/gl/m4/sys_time_h.m4 b/gl/m4/sys_time_h.m4
index 9c16487957..b14bc4ba2b 100644
--- a/gl/m4/sys_time_h.m4
+++ b/gl/m4/sys_time_h.m4
@@ -1,5 +1,5 @@
 # Configure a replacement for <sys/time.h>.
-# serial 2
+# serial 3
 
 # Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
@@ -19,15 +19,13 @@ AC_DEFUN([gl_HEADER_SYS_TIME_H],
 AC_DEFUN([gl_HEADER_SYS_TIME_H_BODY],
 [
   AC_REQUIRE([AC_C_RESTRICT])
+  AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS])
   AC_CHECK_HEADERS_ONCE([sys/time.h])
   gl_CHECK_NEXT_HEADERS([sys/time.h])
 
-  if test $ac_cv_header_sys_time_h = yes; then
-    HAVE_SYS_TIME_H=1
-  else
+  if test $ac_cv_header_sys_time_h != yes; then
     HAVE_SYS_TIME_H=0
   fi
-  AC_SUBST([HAVE_SYS_TIME_H])
 
   AC_CACHE_CHECK([for struct timeval], [gl_cv_sys_struct_timeval],
     [AC_COMPILE_IFELSE(
@@ -40,20 +38,32 @@ AC_DEFUN([gl_HEADER_SYS_TIME_H_BODY],
           [[static struct timeval x; x.tv_sec = x.tv_usec;]])],
        [gl_cv_sys_struct_timeval=yes],
        [gl_cv_sys_struct_timeval=no])])
-  if test $gl_cv_sys_struct_timeval = yes; then
-    HAVE_STRUCT_TIMEVAL=1
-  else
+  if test $gl_cv_sys_struct_timeval != yes; then
     HAVE_STRUCT_TIMEVAL=0
   fi
-  AC_SUBST([HAVE_STRUCT_TIMEVAL])
 
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[
+#if HAVE_SYS_TIME_H
+# include <sys/time.h>
+#endif
+#include <time.h>
+    ]], [gettimeofday])
+])
+
+AC_DEFUN([gl_SYS_TIME_MODULE_INDICATOR],
+[
+  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+  AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS])
+  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+])
+
+AC_DEFUN([gl_HEADER_SYS_TIME_H_DEFAULTS],
+[
+  GNULIB_GETTIMEOFDAY=0;     AC_SUBST([GNULIB_GETTIMEOFDAY])
   dnl Assume POSIX behavior unless another module says otherwise.
-  REPLACE_GETTIMEOFDAY=0
-  AC_SUBST([REPLACE_GETTIMEOFDAY])
-  if test $HAVE_SYS_TIME_H = 0 || test $HAVE_STRUCT_TIMEVAL = 0; then
-    SYS_TIME_H=sys/time.h
-  else
-    SYS_TIME_H=
-  fi
-  AC_SUBST([SYS_TIME_H])
+  HAVE_STRUCT_TIMEVAL=1;     AC_SUBST([HAVE_STRUCT_TIMEVAL])
+  HAVE_SYS_TIME_H=1;         AC_SUBST([HAVE_SYS_TIME_H])
+  REPLACE_GETTIMEOFDAY=0;    AC_SUBST([REPLACE_GETTIMEOFDAY])
 ])
diff --git a/gl/netdb.in.h b/gl/netdb.in.h
index 92daa51386..6e0f966c9a 100644
--- a/gl/netdb.in.h
+++ b/gl/netdb.in.h
@@ -74,18 +74,24 @@ struct addrinfo
 # endif
 
 # if 0
-/* The commented out definitions below are not yet implemented in the
-   GNULIB getaddrinfo() replacement, so are not yet needed and may, in fact,
-   cause conflicts on systems with a getaddrinfo() function which does not
-   define them.
-
-   If they are restored, be sure to protect the definitions with #ifndef.  */
 #  define AI_NUMERICHOST        0x0004  /* Don't use name resolution.  */
-#  define AI_V4MAPPED   0x0008  /* IPv4 mapped addresses are acceptable.  */
-#  define AI_ALL                0x0010  /* Return IPv4 mapped and IPv6 addresses.  */
-#  define AI_ADDRCONFIG 0x0020  /* Use configuration of this host to choose
-                                   returned address type..  */
-# endif /* 0 */
+# endif
+
+/* These symbolic constants are required to be present by POSIX, but
+   our getaddrinfo replacement doesn't use them (yet).  Setting them
+   to 0 on systems that doesn't have them avoids causing problems for
+   system getaddrinfo implementations that would be confused by
+   unknown values.  */
+# ifndef AI_V4MAPPED
+#  define AI_V4MAPPED    0 /* 0x0008: IPv4 mapped addresses are acceptable.  */
+# endif
+# ifndef AI_ALL
+#  define AI_ALL         0 /* 0x0010: Return IPv4 mapped and IPv6 addresses. */
+# endif
+# ifndef AI_ADDRCONFIG
+#  define AI_ADDRCONFIG  0 /* 0x0020: Use configuration of this host to choose
+                                      returned address type..  */
+# endif
 
 /* Error values for `getaddrinfo' function.  */
 # ifndef EAI_BADFLAGS
diff --git a/gl/stdio.in.h b/gl/stdio.in.h
index 6b72c39cb7..96010d2347 100644
--- a/gl/stdio.in.h
+++ b/gl/stdio.in.h
@@ -340,7 +340,11 @@ extern size_t fwrite (const void *ptr, size_t s, size_t n, FILE *stream)
 #endif
 
 #if @GNULIB_GETDELIM@
-# if !@HAVE_DECL_GETDELIM@
+# if @REPLACE_GETDELIM@
+#  undef getdelim
+#  define getdelim rpl_getdelim
+# endif
+# if !@HAVE_DECL_GETDELIM@ || @REPLACE_GETDELIM@
 /* Read input, up to (and including) the next occurrence of DELIMITER, from
    STREAM, store it in *LINEPTR (and NUL-terminate it).
    *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
@@ -382,7 +386,7 @@ _GL_WARN_ON_USE (getline, "getline is unportable - "
 # endif
 #endif
 
-#if @GNULIB_OBSTACK_PRINTF@
+#if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@
 # if @REPLACE_OBSTACK_PRINTF@
 #  define obstack_printf rpl_osbtack_printf
 #  define obstack_vprintf rpl_obstack_vprintf
diff --git a/gl/sys_time.in.h b/gl/sys_time.in.h
index 028093c627..e00f85807f 100644
--- a/gl/sys_time.in.h
+++ b/gl/sys_time.in.h
@@ -41,6 +41,8 @@
 
 /* The definition of _GL_ARG_NONNULL is copied here.  */
 
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -53,11 +55,19 @@ struct timeval
 };
 # endif
 
-# if @REPLACE_GETTIMEOFDAY@
-#  undef gettimeofday
-#  define gettimeofday rpl_gettimeofday
+# if @GNULIB_GETTIMEOFDAY@
+#  if @REPLACE_GETTIMEOFDAY@
+#   undef gettimeofday
+#   define gettimeofday rpl_gettimeofday
 extern int gettimeofday (struct timeval *restrict, void *restrict)
      _GL_ARG_NONNULL ((1));
+#  endif
+# elif defined GNULIB_POSIXCHECK
+#  undef gettimeofday
+#  if HAVE_RAW_DECL_GETTIMEOFDAY
+_GL_WARN_ON_USE (gettimeofday, "gettimeofday is unportable - "
+		 "use gnulib module gettimeofday for portability");
+#  endif
 # endif
 
 #ifdef __cplusplus
diff --git a/gl/tests/test-getdelim.c b/gl/tests/test-getdelim.c
index df9966497e..a5df49f1dd 100644
--- a/gl/tests/test-getdelim.c
+++ b/gl/tests/test-getdelim.c
@@ -33,13 +33,13 @@ int
 main (void)
 {
   FILE *f;
-  char *line = NULL;
-  size_t len = 0;
+  char *line;
+  size_t len;
   ssize_t result;
 
   /* Create test file.  */
   f = fopen ("test-getdelim.txt", "wb");
-  if (!f || fwrite ("anbcnd\0f", 1, 8, f) != 8 || fclose (f) != 0)
+  if (!f || fwrite ("anAnbcnd\0f", 1, 10, f) != 10 || fclose (f) != 0)
     {
       fputs ("Failed to create sample file.\n", stderr);
       remove ("test-getdelim.txt");
@@ -54,13 +54,24 @@ main (void)
     }
 
   /* Test initial allocation, which must include trailing NUL.  */
+  line = NULL;
+  len = 0;
   result = getdelim (&line, &len, 'n', f);
   ASSERT (result == 2);
   ASSERT (strcmp (line, "an") == 0);
   ASSERT (2 < len);
+  free (line);
 
-  /* Test growth of buffer.  */
+  /* Test initial allocation again, with line = NULL and len != 0.  */
+  line = NULL;
+  len = (size_t)(~0) / 4;
+  result = getdelim (&line, &len, 'n', f);
+  ASSERT (result == 2);
+  ASSERT (strcmp (line, "An") == 0);
+  ASSERT (2 < len);
   free (line);
+
+  /* Test growth of buffer.  */
   line = malloc (1);
   len = 1;
   result = getdelim (&line, &len, 'n', f);
diff --git a/gl/tests/test-getline.c b/gl/tests/test-getline.c
index 7112b52a4c..6a661ce530 100644
--- a/gl/tests/test-getline.c
+++ b/gl/tests/test-getline.c
@@ -33,13 +33,13 @@ int
 main (void)
 {
   FILE *f;
-  char *line = NULL;
-  size_t len = 0;
+  char *line;
+  size_t len;
   ssize_t result;
 
   /* Create test file.  */
   f = fopen ("test-getline.txt", "wb");
-  if (!f || fwrite ("a\nbc\nd\0f", 1, 8, f) != 8 || fclose (f) != 0)
+  if (!f || fwrite ("a\nA\nbc\nd\0f", 1, 10, f) != 10 || fclose (f) != 0)
     {
       fputs ("Failed to create sample file.\n", stderr);
       remove ("test-getline.txt");
@@ -54,13 +54,24 @@ main (void)
     }
 
   /* Test initial allocation, which must include trailing NUL.  */
+  line = NULL;
+  len = 0;
   result = getline (&line, &len, f);
   ASSERT (result == 2);
   ASSERT (strcmp (line, "a\n") == 0);
   ASSERT (2 < len);
+  free (line);
 
-  /* Test growth of buffer, must not leak.  */
+  /* Test initial allocation again, with line = NULL and len != 0.  */
+  line = NULL;
+  len = (size_t)(~0) / 4;
+  result = getline (&line, &len, f);
+  ASSERT (result == 2);
+  ASSERT (strcmp (line, "A\n") == 0);
+  ASSERT (2 < len);
   free (line);
+
+  /* Test growth of buffer, must not leak.  */
   line = malloc (1);
   len = 0;
   result = getline (&line, &len, f);
diff --git a/gl/tests/test-gettimeofday.c b/gl/tests/test-gettimeofday.c
index 2a07814bb9..ff2bc72b54 100644
--- a/gl/tests/test-gettimeofday.c
+++ b/gl/tests/test-gettimeofday.c
@@ -20,7 +20,8 @@
 #include <sys/time.h>
 
 #include "signature.h"
-SIGNATURE_CHECK (gettimeofday, int, (struct timeval *, void *));
+SIGNATURE_CHECK (gettimeofday, int,
+                 (struct timeval *, GETTIMEOFDAY_TIMEZONE *));
 
 #include <time.h>
 
@@ -42,8 +43,5 @@ main (void)
       fprintf (stderr, "gettimeofday still clobbers the localtime buffer!\n");
       return 1;
     }
-  else
-    {
-      return 0;
-    }
+  return 0;
 }