lib: Ensure tv_r gets set in io_loop_get_wait_time

If this does not get reset here to 0 it can cause errors or unpredictable behaviour in select/kqueue polling, such as very long delays.
dovecot · Oct 24, 2016 · 3e41b3d · 3e41b3d
1 parent 9faac59
commit 3e41b3d
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/lib/ioloop.c b/src/lib/ioloop.c
@@ -422,6 +422,8 @@ int io_loop_get_wait_time(struct ioloop *ioloop, struct timeval *tv_r)
 		if (gettimeofday(&tv_now, NULL) < 0)
 			i_fatal("gettimeofday(): %m");
 		msecs = 0;
+		tv_r->tv_sec = 0;
+		tv_r->tv_usec = 0;
 	} else {
 		tv_now.tv_sec = 0;
 		msecs = timeout_get_wait_time(timeout, tv_r, &tv_now);