$NetBSD: patch-src_alloc_c,v 1.2 2011/12/24 17:07:07 dholland Exp $

- use standard includes
- add an empty asm() destroying memory that prevents gcc from
  optimizing out __malloc_hook and friends (which leads to
  SIGSEGV in temacs during build)

--- src/alloc.c.orig	1994-10-24 11:37:41.000000000 +0000
+++ src/alloc.c
@@ -30,6 +30,7 @@ the Free Software Foundation, 675 Mass A
 	In make_string(), original bug fixed. */
 
 #include <signal.h>
+#include <stdlib.h>
 
 #include <config.h>
 #include "lisp.h"
@@ -240,6 +241,9 @@ emacs_blocked_free (ptr)
 {
   BLOCK_INPUT;
   __free_hook = old_free_hook;
+#ifdef __GNUC__
+  __asm __volatile("":::"memory");
+#endif
   free (ptr);
   __free_hook = emacs_blocked_free;
   UNBLOCK_INPUT;
@@ -253,6 +257,9 @@ emacs_blocked_malloc (size)
 
   BLOCK_INPUT;
   __malloc_hook = old_malloc_hook;
+#ifdef __GNUC__
+  __asm __volatile("":::"memory");
+#endif
   value = (void *) malloc (size);
   __malloc_hook = emacs_blocked_malloc;
   UNBLOCK_INPUT;
@@ -269,6 +276,9 @@ emacs_blocked_realloc (ptr, size)
 
   BLOCK_INPUT;
   __realloc_hook = old_realloc_hook;
+#ifdef __GNUC__
+  __asm __volatile("":::"memory");
+#endif
   value = (void *) realloc (ptr, size);
   __realloc_hook = emacs_blocked_realloc;
   UNBLOCK_INPUT;