event_reinit: make signals works after fork() without evsig_add()

event_reinit() removes the event, but only evsig_add puts it back. So any
signals set up before event_reinit will be ignored until another signal is
added.

Fixes: #307

1 files changed, 5 insertions, 0 deletions

diff --git a/event.c b/event.c
index 082d292f..503003e2 100644
--- a/event.c
+++ b/event.c
@@ -1025,6 +1025,11 @@ event_reinit(struct event_base *base)
 			res = -1;
 	} else {
 		res = evsig_init_(base);
+		if (res == 0 && had_signal_added) {
+			res = event_add_nolock_(&base->sig.ev_signal, NULL, 0);
+			if (res == 0)
+				base->sig.ev_signal_added = 1;
+		}
 	}
 
 	/* If we were notifiable before, and nothing just exploded, become