From dfc99a56514db15abe8e00aface9cd2be831f447 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Tue, 21 Nov 2006 00:33:33 +0000 Subject: * resolv/mapv4v6addr.h (map_v4v6_address): Optimize a bit. --- resolv/mapv4v6addr.h | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'resolv') diff --git a/resolv/mapv4v6addr.h b/resolv/mapv4v6addr.h index bc3290f162..a71a6cc1a7 100644 --- a/resolv/mapv4v6addr.h +++ b/resolv/mapv4v6addr.h @@ -56,16 +56,14 @@ static void map_v4v6_address (const char *src, char *dst) { u_char *p = (u_char *) dst; - char tmp[INADDRSZ]; int i; - /* Stash a temporary copy so our caller can update in place. */ - memcpy (tmp, src, INADDRSZ); + /* Move the IPv4 part to the right position. */ + memcpy (src + 12, src, INADDRSZ); + /* Mark this ipv6 addr as a mapped ipv4. */ for (i = 0; i < 10; i++) *p++ = 0x00; *p++ = 0xff; - *p++ = 0xff; - /* Retrieve the saved copy and we're done. */ - memcpy ((void *) p, tmp, INADDRSZ); + *p = 0xff; } -- cgit v1.2.3