[collectd] [PATCH] Fix gcc-4.4 strict-aliasing issue

[apevec at gmail.com]

From: Alan Pevec <apevec at redhat.com>

cc1: warnings being treated as errors
liboping.c: In function 'ping_host_add':
liboping.c:995: error: dereferencing pointer 'si' does break strict-aliasing rules
...

Signed-off-by: Alan Pevec <apevec at redhat.com>
---
 src/liboping/liboping.c |   18 ++++++++++++------
 1 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/src/liboping/liboping.c b/src/liboping/liboping.c
index 13bcc92..94adb1d 100644
--- a/src/liboping/liboping.c
+++ b/src/liboping/liboping.c
@@ -987,9 +987,12 @@ int ping_host_add (pingobj_t *obj, const char *host)
 
 		if (ai_ptr->ai_family == AF_INET)
 		{
-			struct sockaddr_in *si;
-
-			si = (struct sockaddr_in *) &sockaddr;
+			union {
+			    struct sockaddr_storage any_socket;
+			    struct sockaddr_in si;
+			} s;
+			s.any_socket = sockaddr;
+			struct sockaddr_in *si = &s.si;
 			si->sin_family = AF_INET;
 			si->sin_port   = htons (ph->ident);
 			si->sin_addr.s_addr = htonl (INADDR_ANY);
@@ -999,9 +1002,12 @@ int ping_host_add (pingobj_t *obj, const char *host)
 		}
 		else if (ai_ptr->ai_family == AF_INET6)
 		{
-			struct sockaddr_in6 *si;
-
-			si = (struct sockaddr_in6 *) &sockaddr;
+			union {
+			    struct sockaddr_storage any_socket;
+			    struct sockaddr_in6 si;
+			} s;
+			s.any_socket = sockaddr;
+			struct sockaddr_in6 *si = &s.si;
 			si->sin6_family = AF_INET6;
 			si->sin6_port   = htons (ph->ident);
 			si->sin6_addr   = in6addr_any;
-- 
1.6.0.6