[src/trunk]: src/lib/libc/stdlib Reorder memcpy(3) and save errno

[kamil <kamil%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/971d787abcba
branches:  trunk
changeset: 339353:971d787abcba
user:      kamil <kamil%NetBSD.org@localhost>
date:      Thu Jul 16 00:03:59 2015 +0000

description:
Reorder memcpy(3) and save errno


This change is for safety as memcpy(3) might change it.

Approved by <riastradh>

diffstat:

 lib/libc/stdlib/reallocarr.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (28 lines):

diff -r 8f9a3c789396 -r 971d787abcba lib/libc/stdlib/reallocarr.c
--- a/lib/libc/stdlib/reallocarr.c      Wed Jul 15 19:08:43 2015 +0000
+++ b/lib/libc/stdlib/reallocarr.c      Thu Jul 16 00:03:59 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: reallocarr.c,v 1.1 2015/02/17 20:29:21 joerg Exp $ */
+/* $NetBSD: reallocarr.c,v 1.2 2015/07/16 00:03:59 kamil Exp $ */
 
 /*-
  * Copyright (c) 2015 Joerg Sonnenberger <joerg%NetBSD.org@localhost>.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: reallocarr.c,v 1.1 2015/02/17 20:29:21 joerg Exp $");
+__RCSID("$NetBSD: reallocarr.c,v 1.2 2015/07/16 00:03:59 kamil Exp $");
 
 #include "namespace.h"
 #include <errno.h>
@@ -55,8 +55,8 @@
        void *optr;
        void *nptr;
 
+       saved_errno = errno;
        memcpy(&optr, ptr, sizeof(ptr));
-       saved_errno = errno;
        if (num == 0 || size == 0) {
                free(optr);
                nptr = NULL;