diff -uNr m4-1.4-orig/lib/regex.c m4-1.4/lib/regex.c
--- m4-1.4-orig/lib/regex.c	1994-10-27 08:43:45.000000000 +1000
+++ m4-1.4/lib/regex.c	2004-06-22 21:52:42.000000000 +1000
@@ -46,13 +46,7 @@
 
 #else  /* not emacs */
 
-#ifdef STDC_HEADERS
 #include <stdlib.h>
-#else
-char *malloc ();
-char *realloc ();
-#endif
-
 
 /* We used to test for `BSTRING' here, but only GCC and Emacs define
    `BSTRING', as far as I know, and neither of them use this code.  */