Fix a crash in the event system's poll() backend introduced with

support for nanosecond timers.  Only affects systems without ppoll().
Bug #851

diff --git a/lib/util/event_poll.c b/lib/util/event_poll.c
index c717b79da460dfabf2b7125bee9f9fea0922372b..c21d1ca8bc83def28a3092d83a0ab6e8f91078e5 100644 (file)
--- a/lib/util/event_poll.c
+++ b/lib/util/event_poll.c
@@ -144,7 +144,8 @@ sudo_ev_poll(struct pollfd *fds, nfds_t nfds, const struct timespec *timo)
 static int
 sudo_ev_poll(struct pollfd *fds, nfds_t nfds, const struct timespec *timo)
 {
-    const int timeout = (timo->tv_sec * 1000) + (timo->tv_nsec / 1000000);
+    const int timeout =
+       timo ? (timo->tv_sec * 1000) + (timo->tv_nsec / 1000000) : -1;
 
     return poll(fds, nfds, timeout);
 }