From 6622cd327739424bdb56822f27831b68edbc32ef Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Wed, 21 Apr 2021 08:32:18 +0200
Subject: [PATCH] output: correctly handle outputs without a test() impl

This fixes a crash when calling wlr_output_test() on a headless
output.

Closes: https://github.com/swaywm/sway/issues/6213
---
 types/wlr_output.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/types/wlr_output.c b/types/wlr_output.c
index d07bc405..8f83a005 100644
--- a/types/wlr_output.c
+++ b/types/wlr_output.c
@@ -580,6 +580,9 @@ bool wlr_output_test(struct wlr_output *output) {
 	if (!output_basic_test(output)) {
 		return false;
 	}
+	if (!output->impl->test) {
+		return true;
+	}
 	return output->impl->test(output);
 }