| 1 | # realloc.m4 serial 12
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| 2 | dnl Copyright (C) 2007, 2009-2012 Free Software Foundation, Inc.
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| 3 | dnl This file is free software; the Free Software Foundation
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| 4 | dnl gives unlimited permission to copy and/or distribute it,
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| 5 | dnl with or without modifications, as long as this notice is preserved.
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| 6 |
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| 7 | # gl_FUNC_REALLOC_GNU
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| 8 | # -------------------
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| 9 | # Test whether 'realloc (0, 0)' is handled like in GNU libc, and replace
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| 10 | # realloc if it is not.
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| 11 | AC_DEFUN([gl_FUNC_REALLOC_GNU],
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| 12 | [
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| 13 | AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
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| 14 | dnl _AC_FUNC_REALLOC_IF is defined in Autoconf.
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| 15 | _AC_FUNC_REALLOC_IF(
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| 16 | [AC_DEFINE([HAVE_REALLOC_GNU], [1],
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| 17 | [Define to 1 if your system has a GNU libc compatible 'realloc'
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| 18 | function, and to 0 otherwise.])],
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| 19 | [AC_DEFINE([HAVE_REALLOC_GNU], [0])
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| 20 | REPLACE_REALLOC=1
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| 21 | ])
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| 22 | ])# gl_FUNC_REALLOC_GNU
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| 23 |
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| 24 | # gl_FUNC_REALLOC_POSIX
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| 25 | # ---------------------
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| 26 | # Test whether 'realloc' is POSIX compliant (sets errno to ENOMEM when it
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| 27 | # fails), and replace realloc if it is not.
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| 28 | AC_DEFUN([gl_FUNC_REALLOC_POSIX],
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| 29 | [
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| 30 | AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
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| 31 | AC_REQUIRE([gl_CHECK_MALLOC_POSIX])
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| 32 | if test $gl_cv_func_malloc_posix = yes; then
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| 33 | AC_DEFINE([HAVE_REALLOC_POSIX], [1],
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| 34 | [Define if the 'realloc' function is POSIX compliant.])
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| 35 | else
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| 36 | REPLACE_REALLOC=1
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| 37 | fi
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| 38 | ])
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