diff options
Diffstat (limited to 'resolv/res_query.c')
| -rw-r--r-- | resolv/res_query.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/resolv/res_query.c b/resolv/res_query.c index a8e8d7b739..3d2f2fe3a9 100644 --- a/resolv/res_query.c +++ b/resolv/res_query.c @@ -224,6 +224,21 @@ __libc_res_nquery(res_state statp, tests of HP2. */ HEADER *hp2 = answerp2 ? (HEADER *) *answerp2 : hp; + if (n < sizeof (HEADER) && nanswerp2 != NULL + && *nanswerp2 > sizeof (HEADER)) + { + /* Special case of partial answer. */ + assert (hp != hp2); + hp = hp2; + } + else if (nanswerp2 != NULL + && *nanswerp2 < sizeof (HEADER) && n > sizeof (HEADER)) + { + /* Special case of partial answer. */ + assert (hp != hp2); + hp2 = hp; + } + if ((hp->rcode != NOERROR || ntohs(hp->ancount) == 0) && (hp2->rcode != NOERROR || ntohs(hp2->ancount) == 0)) { #ifdef DEBUG |