X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Frealloc.m4;h=5cc1340d13a73856002f675ea57b9b1da4f8e43c;hb=60e3ab133c3ffe0bae411a44829498faf8816b34;hp=f9fd935dbbde98f57212b8786a6cfbc3cc2cbe18;hpb=097a47250043b34926a0a03b5263b237882f1673;p=gnulib.git

diff --git a/m4/realloc.m4 b/m4/realloc.m4
index f9fd935db..5cc1340d1 100644
--- a/m4/realloc.m4
+++ b/m4/realloc.m4
@@ -1,23 +1,38 @@
-# realloc.m4 serial 8
-dnl Copyright (C) 2007 Free Software Foundation, Inc.
+# realloc.m4 serial 12
+dnl Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
+# gl_FUNC_REALLOC_GNU
+# -------------------
+# Test whether 'realloc (0, 0)' is handled like in GNU libc, and replace
+# realloc if it is not.
+AC_DEFUN([gl_FUNC_REALLOC_GNU],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  dnl _AC_FUNC_REALLOC_IF is defined in Autoconf.
+  _AC_FUNC_REALLOC_IF(
+    [AC_DEFINE([HAVE_REALLOC_GNU], [1],
+               [Define to 1 if your system has a GNU libc compatible 'realloc'
+                function, and to 0 otherwise.])],
+    [AC_DEFINE([HAVE_REALLOC_GNU], [0])
+     REPLACE_REALLOC=1
+    ])
+])# gl_FUNC_REALLOC_GNU
+
 # gl_FUNC_REALLOC_POSIX
 # ---------------------
 # Test whether 'realloc' is POSIX compliant (sets errno to ENOMEM when it
 # fails), and replace realloc if it is not.
 AC_DEFUN([gl_FUNC_REALLOC_POSIX],
 [
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
   AC_REQUIRE([gl_CHECK_MALLOC_POSIX])
   if test $gl_cv_func_malloc_posix = yes; then
-    HAVE_REALLOC_POSIX=1
-    AC_DEFINE([HAVE_REALLOC_POSIX], 1,
+    AC_DEFINE([HAVE_REALLOC_POSIX], [1],
       [Define if the 'realloc' function is POSIX compliant.])
   else
-    AC_LIBOBJ([realloc])
-    HAVE_REALLOC_POSIX=0
+    REPLACE_REALLOC=1
   fi
-  AC_SUBST([HAVE_REALLOC_POSIX])
 ])