From: Guus Sliepen <guus@meshlink.io>
Date: Tue, 21 Apr 2020 21:33:47 +0000 (+0200)
Subject: Avoid a crash when graph() is called when the event loop is not running.
X-Git-Url: http://git.meshlink.io/?p=meshlink;a=commitdiff_plain;h=42fe08d7834df4ef2c12af9f78d14f606dc4651d

Avoid a crash when graph() is called when the event loop is not running.
---

diff --git a/src/graph.c b/src/graph.c
index 050acbf5..c6e413d4 100644
--- a/src/graph.c
+++ b/src/graph.c
@@ -228,7 +228,7 @@ static void check_reachability(meshlink_handle_t *mesh) {
 		if(!reachable) {
 			mesh->last_unreachable = mesh->loop.now.tv_sec;
 
-			if(mesh->threadstarted) {
+			if(mesh->threadstarted && mesh->periodictimer.cb) {
 				timeout_set(&mesh->loop, &mesh->periodictimer, &(struct timespec) {
 					0, prng(mesh, TIMER_FUDGE)
 				});