-/* Prototypes for functions defined here. */
-#if defined (__STDC__) && __STDC__
-static void *fixup_null_alloc (size_t n);
-void *xmalloc (size_t n);
-void *xcalloc (size_t n, size_t s);
-void *xrealloc (void *p, size_t n);
+#ifndef HAVE_DONE_WORKING_MALLOC_CHECK
+"you must run the autoconf test for a properly working malloc -- see malloc.m4"