- dnl xmalloc.c requires that this symbol be defined so it doesn't
- dnl mistakenly use a broken realloc -- as it might if this test were omitted.
- AC_DEFINE(HAVE_DONE_WORKING_REALLOC_CHECK, 1,
- [Define if the realloc check has been performed. ])
-
- AC_CACHE_CHECK([whether realloc(0,0) returns a non-NULL pointer],
- jm_cv_func_working_realloc,
- [AC_TRY_RUN([
- char *realloc ();
- int
- main ()
- {
- exit (realloc (0, 0) ? 0 : 1);
- }
- ],
- jm_cv_func_working_realloc=yes,
- jm_cv_func_working_realloc=no,
- dnl When crosscompiling, assume realloc(0,0) returns NULL.
- jm_cv_func_working_realloc=no)
- ])
- if test $jm_cv_func_working_realloc = no; then
- AC_LIBOBJ(realloc)
- AC_DEFINE(realloc, rpl_realloc,
- [Define to rpl_realloc if the replacement function should be used.])
+ 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,
+ [Define if the 'realloc' function is POSIX compliant.])
+ else
+ AC_LIBOBJ([realloc])
+ HAVE_REALLOC_POSIX=0