From a3a5d9a21bca7fc02801c2a9c92bc0821d4ca0ff Mon Sep 17 00:00:00 2001
From: Consolatis <35009135+Consolatis@users.noreply.github.com>
Date: Sun, 27 Aug 2023 21:11:04 +0200
Subject: [PATCH] src/osd.c: prevent crash with theme setting
 osd.window-switcher.width: 0

Fixes: #1050
Reported-by: @4ffy (thanks)
---
 src/osd.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/osd.c b/src/osd.c
index ba52536c..5477cf27 100644
--- a/src/osd.c
+++ b/src/osd.c
@@ -425,6 +425,10 @@ display_osd(struct output *output)
 		wlr_buffer_drop(&output->osd_buffer->base);
 	}
 	output->osd_buffer = buffer_create_cairo(w, h, scale, true);
+	if (!output->osd_buffer) {
+		wlr_log(WLR_ERROR, "Failed to allocate cairo buffer for the window switcher");
+		return;
+	}
 
 	/* Render OSD image */
 	cairo_t *cairo = output->osd_buffer->cairo;
@@ -462,7 +466,7 @@ osd_update(struct server *server)
 		return;
 	}
 
-	if (rc.window_switcher.show) {
+	if (rc.window_switcher.show && rc.theme->osd_window_switcher_width > 0) {
 		/* Display the actual OSD */
 		struct output *output;
 		wl_list_for_each(output, &server->outputs, link) {
-- 
2.52.0