From d46b6e4e0eddf914c8861c4daec0cd9316398d3b Mon Sep 17 00:00:00 2001
From: Lukas Oberhuber <lukas@hiphops.io>
Date: Sun, 20 Apr 2025 15:51:49 +0100
Subject: [PATCH] app: Partial fix for #13702 infinite loop on startup

If somehow an image is not passed when opened from the command line, this avoids an infinite loop
as was seen in #13702

This still does not solve the issue of how a bad image was passed in in the first place.
---
 app/file/file-open.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/app/file/file-open.c b/app/file/file-open.c
index 75337234b5..1dd27c293d 100644
--- a/app/file/file-open.c
+++ b/app/file/file-open.c
@@ -749,6 +749,11 @@ static void
 file_open_sanitize_image (GimpImage *image,
                           gboolean   as_new)
 {
+  /* This should never occur, but apparently it does sometimes #13702
+   * Avoids infinite loop in the while statement below.
+   */
+  g_return_if_fail (GIMP_IS_IMAGE (image));
+
   if (as_new)
     gimp_image_set_file (image, NULL);