broken-realloc.m4 revision 178826
1dnl 2dnl $Id: broken-realloc.m4 15435 2005-06-16 19:45:52Z lha $ 3dnl 4dnl Test for realloc that doesn't handle NULL as first parameter 5dnl 6AC_DEFUN([rk_BROKEN_REALLOC], [ 7AC_CACHE_CHECK(if realloc if broken, ac_cv_func_realloc_broken, [ 8ac_cv_func_realloc_broken=no 9AC_RUN_IFELSE([AC_LANG_SOURCE([[ 10#include <stddef.h> 11#include <stdlib.h> 12 13int main(int argc, char **argv) 14{ 15 return realloc(NULL, 17) == NULL; 16} 17]])],[:], [ac_cv_func_realloc_broken=yes],[:]) 18]) 19if test "$ac_cv_func_realloc_broken" = yes ; then 20 AC_DEFINE(BROKEN_REALLOC, 1, [Define if realloc(NULL) doesn't work.]) 21fi 22AH_BOTTOM([#ifdef BROKEN_REALLOC 23#define realloc(X, Y) rk_realloc((X), (Y)) 24#endif]) 25]) 26