Add cairo_image_surface_create error handling

cairo_image_surface_create can fail, e.g. when running out of
memory or when the size is too big. Avoid crashing in this case.

Closes: https://github.com/swaywm/sway/issues/6531
(cherry picked from commit 59aebaa5f9f3afe9cdfbb0d37c4dc631690da3b9)

1 files changed, 7 insertions, 0 deletions

diff --git a/sway/tree/container.c b/sway/tree/container.c
index 132b6819..e5149fb6 100644
--- a/sway/tree/container.c
+++ b/sway/tree/container.c
@@ -536,6 +536,13 @@ static void render_titlebar_text_texture(struct sway_output *output,
 
         cairo_surface_t *surface = cairo_image_surface_create(
                         CAIRO_FORMAT_ARGB32, width, height);
+        cairo_status_t status = cairo_surface_status(surface);
+        if (status != CAIRO_STATUS_SUCCESS) {
+                sway_log(SWAY_ERROR, "cairo_image_surface_create failed: %s",
+                        cairo_status_to_string(status));
+                return;
+        }
+
         cairo_t *cairo = cairo_create(surface);
         cairo_set_antialias(cairo, CAIRO_ANTIALIAS_BEST);
         cairo_set_font_options(cairo, fo);