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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /resolv/res_query.c
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
downloadglibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.gz
2.5-18.1
Diffstat (limited to 'resolv/res_query.c')
-rw-r--r--resolv/res_query.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/resolv/res_query.c b/resolv/res_query.c
index 0feba6687a..85bad97d2d 100644
--- a/resolv/res_query.c
+++ b/resolv/res_query.c
@@ -69,6 +69,7 @@ static const char sccsid[] = "@(#)res_query.c 8.1 (Berkeley) 6/4/93";
static const char rcsid[] = "$BINDId: res_query.c,v 8.20 2000/02/29 05:39:12 vixie Exp $";
#endif /* LIBC_SCCS and not lint */
+#include <assert.h>
#include <sys/types.h>
#include <sys/param.h>
#include <netinet/in.h>
@@ -151,6 +152,7 @@ __libc_res_nquery(res_state statp,
free (buf);
return (n);
}
+ assert (answerp == NULL || (void *) *answerp == (void *) answer);
n = __libc_res_nsend(statp, buf, n, answer, anslen, answerp);
if (use_malloc)
free (buf);
@@ -163,6 +165,10 @@ __libc_res_nquery(res_state statp,
return (n);
}
+ if (answerp != NULL)
+ /* __libc_res_nsend might have reallocated the buffer. */
+ hp = (HEADER *) *answerp;
+
if (hp->rcode != NOERROR || ntohs(hp->ancount) == 0) {
#ifdef DEBUG
if (statp->options & RES_DEBUG)