+# define EXIT_FAILURE 1
+#endif
+
+/* 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);