commit ce2a433ca157b444b54646aa0383ff5b75cc41f9
Author: Matthias Clasen <mclasen@redhat.com>
Date:   Mon Apr 19 16:39:53 2021 -0400

    Fix a possible crash in gtk_show_uri
    
    g_file_get_basename can return NULL.
    Deal with it somehow.
    
    Fixes: #3883

diff --git a/gdk/x11/gdkapplaunchcontext-x11.c b/gdk/x11/gdkapplaunchcontext-x11.c
index 206c34e52d..43c190e5e6 100644
--- a/gdk/x11/gdkapplaunchcontext-x11.c
+++ b/gdk/x11/gdkapplaunchcontext-x11.c
@@ -45,6 +45,9 @@ get_display_name (GFile     *file,
   if (name == NULL)
     {
       name = g_file_get_basename (file);
+      if (name == NULL)
+        name = g_file_get_uri (file);
+
       if (!g_utf8_validate (name, -1, NULL))
         {
           tmp = name;