Re: [libvirt] [PATCH 1/3] Fix bridge.c warnings with gcc-4.4

bridge.c: In function 'brSetInetAddr': bridge.c:665: error: dereferencing pointer '({anonymous})' does break strict-aliasing rules bridge.c:665: note: initialized from here bridge.c:666: error: dereferencing pointer '({anonymous})' does break strict-aliasing rules bridge.c:666: note: initialized from here Signed-off-by: Mark McLoughlin <markmc(a)redhat.com&gt; --- src/bridge.c | 10 ++++++++-- 1 files changed, 8 insertions(+), 2 deletions(-) diff --git a/src/bridge.c b/src/bridge.c index 990a567..fc11429 100644 --- a/src/bridge.c +++ b/src/bridge.c @@ -642,6 +642,10 @@ brSetInetAddr(brControl *ctl, int cmd, const char *addr) { + union { + struct sockaddr sa; + struct sockaddr_in sa_in; + } s; struct ifreq ifr; struct in_addr inaddr; int len, ret; @@ -662,8 +666,10 @@ brSetInetAddr(brControl *ctl, else if (ret == 0) return EINVAL; - ((struct sockaddr_in *)&ifr.ifr_data)->sin_family = AF_INET; - ((struct sockaddr_in *)&ifr.ifr_data)->sin_addr = inaddr; + s.sa_in.sin_family = AF_INET; + s.sa_in.sin_addr = inaddr; + + ifr.ifr_addr = s.sa; if (ioctl(ctl->fd, cmd, &ifr) < 0) return errno;