dns: treat names rejected by res_mkquery as nonexistent rather than error

[musl] / src / network / getaddrinfo.c

diff --git a/src/network/getaddrinfo.c b/src/network/getaddrinfo.c
index efaab30..9df045f 100644 (file)
--- a/src/network/getaddrinfo.c
+++ b/src/network/getaddrinfo.c
@@ -66,9 +66,11 @@ int getaddrinfo(const char *restrict host, const char *restrict serv, const stru
                                pthread_setcancelstate(
                                        PTHREAD_CANCEL_DISABLE, &cs);
                                int r = connect(s, ta[i], tl[i]);
+                               int saved_errno = errno;
                                pthread_setcancelstate(cs, 0);
                                close(s);
                                if (!r) continue;
+                               errno = saved_errno;
                        }
                        switch (errno) {
                        case EADDRNOTAVAIL: