diff options
Diffstat (limited to 'lib/libc/net/res_mkquery.c')
| -rw-r--r-- | lib/libc/net/res_mkquery.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/libc/net/res_mkquery.c b/lib/libc/net/res_mkquery.c index f079e0d..7ef1ace 100644 --- a/lib/libc/net/res_mkquery.c +++ b/lib/libc/net/res_mkquery.c @@ -229,6 +229,8 @@ res_opt(n0, buf, buflen, anslen) __putshort(T_OPT, cp); /* TYPE */ cp += INT16SZ; + if (anslen > 0xffff) + anslen = 0xffff; /* limit to 16bit value */ __putshort(anslen & 0xffff, cp); /* CLASS = UDP payload size */ cp += INT16SZ; *cp++ = NOERROR; /* extended RCODE */ |
