Author: ume
Date: Tue Dec 22 12:01:06 2015
New Revision: 292595
URL: https://svnweb.freebsd.org/changeset/base/292595
Log:
We don't need to use a temporary buffer, here.
MFC after: 1 week
Modified:
head/lib/libc/net/map_v4v6.c
Modified: head/lib/libc/net/map_v4v6.c
==============================================================================
--- head/lib/libc/net/map_v4v6.c Tue Dec 22 09:55:44 2015
(r292594)
+++ head/lib/libc/net/map_v4v6.c Tue Dec 22 12:01:06 2015
(r292595)
@@ -78,15 +78,11 @@ typedef union {
void
_map_v4v6_address(const char *src, char *dst)
{
- char tmp[NS_INADDRSZ];
-
- /* Stash a temporary copy so our caller can update in place. */
- memcpy(tmp, src, NS_INADDRSZ);
+ /* Our caller may update in place. */
+ memmove(&dst[12], src, NS_INADDRSZ);
/* Mark this ipv6 addr as a mapped ipv4. */
- memset(&dst[0], 0, 10);
memset(&dst[10], 0xff, 2);
- /* Retrieve the saved copy and we're done. */
- memcpy(&dst[12], tmp, NS_INADDRSZ);
+ memset(&dst[0], 0, 10);
}
void
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