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Work around some gcc 4.4 strict-aliasing warnings

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gcc 4.4 ends up generating strict-aliasing warnings about some very common
networking socket uses that do not really result in a real problem and
cannot be easily avoided with union-based type-punning due to struct
definitions including another struct in system header files. To avoid having
to fully disable strict-aliasing warnings, provide a mechanism to hide the
typecast from aliasing for now. A cleaner solution will hopefully be found
in the future to handle these cases.
This commit is contained in:
Jouni Malinen 2009-11-04 19:49:14 +02:00
parent eb999fefcb
commit 0ae7b08691
6 changed files with 28 additions and 7 deletions
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2
src/l2_packet/l2_packet_linux.c
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@ -185,7 +185,7 @@ int l2_packet_get_ip_addr(struct l2_packet_data *l2, char *buf, size_t len)
return -1;
}
close(s);
saddr = (struct sockaddr_in *) &ifr.ifr_addr;
saddr = aliasing_hide_typecast(&ifr.ifr_addr, struct sockaddr_in);
if (saddr->sin_family != AF_INET)
return -1;
res = os_strlcpy(buf, inet_ntoa(saddr->sin_addr), len);