From: Stephan Bosch <stephan.bosch@open-xchange.com>
Date: Sat, 11 Apr 2020 13:11:32 +0000 (+0200)
Subject: lib: lib-signals - Fix assert panic occurring at ioloop switch without delayed handlers.
X-Git-Tag: 2.3.13~728
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c2821ac8bc7b0ac4721607c60108c006098817a3;p=thirdparty%2Fdovecot%2Fcore.git

lib: lib-signals - Fix assert panic occurring at ioloop switch without delayed handlers.

Panic was:

Panic: file ioloop.c: line 86 (io_add_to): assertion failed: (fd >= 0)
---

diff --git a/src/lib/lib-signals.c b/src/lib/lib-signals.c
index 10ebdf8d5d..577b39a338 100644
--- a/src/lib/lib-signals.c
+++ b/src/lib/lib-signals.c
@@ -301,7 +301,7 @@ static void ATTR_NULL(1) signal_read(void *context ATTR_UNUSED)
 
 static void lib_signals_enable_delayed_hander(void)
 {
-	if (current_ioloop != NULL) {
+	if (current_ioloop != NULL && sig_pipe_fd[0] > 0) {
 		io_sig = io_add(sig_pipe_fd[0], IO_READ,
 			signal_read, NULL);
 		io_set_never_wait_alone(io_sig, TRUE);