Assert output is found before removing from list

References: https://github.com/swaywm/sway/issues/5483
(cherry picked from commit 9bb70283e967037e6d57bc863ef96d3b5185a989)

1 files changed, 5 insertions, 1 deletions

diff --git a/sway/tree/output.c b/sway/tree/output.c
index ae3c3abf..d600c5c3 100644
--- a/sway/tree/output.c
+++ b/sway/tree/output.c
@@ -251,6 +251,11 @@ void output_disable(struct sway_output *output) {
         if (!sway_assert(output->enabled, "Expected an enabled output")) {
                 return;
         }
+        int index = list_find(root->outputs, output);
+        if (!sway_assert(index >= 0, "Output not found in root node")) {
+                return;
+        }
+
         sway_log(SWAY_DEBUG, "Disabling output '%s'", output->wlr_output->name);
         wl_signal_emit(&output->events.destroy, output);
 
@@ -258,7 +263,6 @@ void output_disable(struct sway_output *output) {
 
         root_for_each_container(untrack_output, output);
 
-        int index = list_find(root->outputs, output);
         list_del(root->outputs, index);
 
         output->enabled = false;