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lib: address type-punned pointers in prefix_same()

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IPV4_ADDR_SAME() wasn't passed the right union member, this could cause
a bug due to strict-aliasing. IPV6_ADDR_SAME() case got its fix before
the error could be created by macro upgrade.
This commit is contained in:
Denis Ovsienko 2011-12-18 15:40:17 +04:00
parent 733cd9e579
commit fe40bfa2e1
1 changed files with 2 additions and 2 deletions
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4
lib/prefix.c
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@ -2411,11 +2411,11 @@ prefix_same (const struct prefix *p1, const struct prefix *p2)
if (p1->family == p2->family && p1->prefixlen == p2->prefixlen) if (p1->family == p2->family && p1->prefixlen == p2->prefixlen)
{ {
if (p1->family == AF_INET) if (p1->family == AF_INET)
if (IPV4_ADDR_SAME (&p1->u.prefix, &p2->u.prefix)) if (IPV4_ADDR_SAME (&p1->u.prefix4.s_addr, &p2->u.prefix4.s_addr))
return 1; return 1;
#ifdef HAVE_IPV6 #ifdef HAVE_IPV6
if (p1->family == AF_INET6 ) if (p1->family == AF_INET6 )
if (IPV6_ADDR_SAME (&p1->u.prefix, &p2->u.prefix)) if (IPV6_ADDR_SAME (&p1->u.prefix6.s6_addr, &p2->u.prefix6.s6_addr))
return 1; return 1;
#endif /* HAVE_IPV6 */ #endif /* HAVE_IPV6 */
} }