Resolve some compiler errors in ast_sockaddr_is_any().

These errors came up once this function was used from within netsock2.c.
The errors were like the following:

netsock2.c:393: error: dereferencing pointer ‘({anonymous})’ does break strict-aliasing rules

The usage of a union here avoids this problem.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@292188 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/main/netsock2.c b/main/netsock2.c
index 80dc355eee032c76dfa2c69e55ad313c343193db..e575bcfa23640ef7bfe0ceeb8187e760575667a4 100644 (file)
--- a/main/netsock2.c
+++ b/main/netsock2.c
@@ -389,11 +389,16 @@ int ast_sockaddr_is_ipv6(const struct ast_sockaddr *addr)
 
 int ast_sockaddr_is_any(const struct ast_sockaddr *addr)
 {
-       return (ast_sockaddr_is_ipv4(addr) &&
-               ((const struct sockaddr_in *)&addr->ss)->sin_addr.s_addr ==
-               INADDR_ANY) ||
-           (ast_sockaddr_is_ipv6(addr) &&
-            IN6_IS_ADDR_UNSPECIFIED(&((const struct sockaddr_in6 *)&addr->ss)->sin6_addr));
+       union {
+               struct sockaddr_storage ss;
+               struct sockaddr_in sin;
+               struct sockaddr_in6 sin6;
+       } tmp_addr = {
+               .ss = addr->ss,
+       };
+
+       return (ast_sockaddr_is_ipv4(addr) && (tmp_addr.sin.sin_addr.s_addr == INADDR_ANY)) ||
+           (ast_sockaddr_is_ipv6(addr) && IN6_IS_ADDR_UNSPECIFIED(&tmp_addr.sin6.sin6_addr));
 }
 
 int ast_sockaddr_hash(const struct ast_sockaddr *addr)