[gimp] Bug 784647: Crash when choosing debug option Show Image Graph

[Jehan Pagès <jehanp src gnome org>]

commit b118e8242bb8490042e7dc9aee6bcda8df7eef0b
Author: Massimo Valentini <mvalentini src gnome org>
Date:   Wed Jan 10 10:29:37 2018 +0100

    Bug 784647: Crash when choosing debug option Show Image Graph
    
    The attached patch avoids CRITICALs when executing Debug actions
    with no images open.
    1) do not run projection benchmark unless there is an image
    2) memsize of pluginmanager member was incorrectly computed using
       gimp_object functions for 2 GObjects

 app/actions/debug-commands.c    |   26 +++++++++++++++-----------
 app/plug-in/gimppluginmanager.c |    6 ++----
 2 files changed, 17 insertions(+), 15 deletions(-)
---
diff --git a/app/actions/debug-commands.c b/app/actions/debug-commands.c
index 6e1a28a..85de856 100644
--- a/app/actions/debug-commands.c
+++ b/app/actions/debug-commands.c
@@ -282,22 +282,26 @@ debug_dump_attached_data_cmd_callback (GtkAction *action,
 static gboolean
 debug_benchmark_projection (GimpDisplay *display)
 {
-  GimpImage      *image      = gimp_display_get_image (display);
-  GimpProjection *projection = gimp_image_get_projection (image);
+  GimpImage *image = gimp_display_get_image (display);
 
-  GIMP_TIMER_START ();
+  if (image)
+    {
+      GimpProjection *projection = gimp_image_get_projection (image);
+
+      GIMP_TIMER_START ();
 
-  gimp_image_invalidate (image,
-                         0, 0,
-                         gimp_image_get_width  (image),
-                         gimp_image_get_height (image));
-  gimp_projection_flush_now (projection);
+      gimp_image_invalidate (image,
+                             0, 0,
+                             gimp_image_get_width  (image),
+                             gimp_image_get_height (image));
+      gimp_projection_flush_now (projection);
 
-  gimp_display_flush_now (display);
+      gimp_display_flush_now (display);
 
-  GIMP_TIMER_END ("Validation of the entire projection");
+      GIMP_TIMER_END ("Validation of the entire projection");
 
-  g_object_unref (display);
+      g_object_unref (display);
+    }
 
   return FALSE;
 }
diff --git a/app/plug-in/gimppluginmanager.c b/app/plug-in/gimppluginmanager.c
index 6fd19f0..705eeb9 100644
--- a/app/plug-in/gimppluginmanager.c
+++ b/app/plug-in/gimppluginmanager.c
@@ -192,10 +192,8 @@ gimp_plug_in_manager_get_memsize (GimpObject *object,
   memsize += gimp_g_slist_get_memsize (manager->plug_in_stack, 0);
 
   memsize += 0; /* FIXME manager->shm */
-  memsize += gimp_object_get_memsize (GIMP_OBJECT (manager->interpreter_db),
-                                      gui_size);
-  memsize += gimp_object_get_memsize (GIMP_OBJECT (manager->environ_table),
-                                      gui_size);
+  memsize += /* FIXME */ gimp_g_object_get_memsize (G_OBJECT (manager->interpreter_db));
+  memsize += /* FIXME */ gimp_g_object_get_memsize (G_OBJECT (manager->environ_table));
   memsize += 0; /* FIXME manager->plug_in_debug */
   memsize += gimp_g_list_get_memsize (manager->data_list, 0 /* FIXME */);