2001-02-13 16:46:19 +00:00
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dnl
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2004-04-03 21:22:55 +00:00
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dnl $Id: broken-realloc.m4,v 1.1.12.1 2004/04/01 07:27:32 joda Exp $
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2001-02-13 16:46:19 +00:00
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dnl
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dnl Test for realloc that doesn't handle NULL as first parameter
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dnl
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2004-04-03 21:22:55 +00:00
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AC_DEFUN([rk_BROKEN_REALLOC], [
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2001-02-13 16:46:19 +00:00
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AC_CACHE_CHECK(if realloc if broken, ac_cv_func_realloc_broken, [
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ac_cv_func_realloc_broken=no
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AC_TRY_RUN([
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#include <stddef.h>
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#include <stdlib.h>
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int main()
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{
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return realloc(NULL, 17) == NULL;
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}
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],:, ac_cv_func_realloc_broken=yes, :)
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])
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if test "$ac_cv_func_realloc_broken" = yes ; then
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AC_DEFINE(BROKEN_REALLOC, 1, [Define if realloc(NULL) doesn't work.])
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fi
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AH_BOTTOM([#ifdef BROKEN_REALLOC
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#define realloc(X, Y) isoc_realloc((X), (Y))
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#define isoc_realloc(X, Y) ((X) ? realloc((X), (Y)) : malloc(Y))
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#endif])
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])
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