[Bf-blender-cvs] [999c5c5c8d4] master: Fix (studio-reported) crash when linking/appending data in some cases.
Bastien Montagne
noreply at git.blender.org
Mon Aug 29 17:25:14 CEST 2022
Commit: 999c5c5c8d44943f1df3cbcf227e59422d990acf
Author: Bastien Montagne
Date: Mon Aug 29 17:23:42 2022 +0200
Branches: master
https://developer.blender.org/rB999c5c5c8d44943f1df3cbcf227e59422d990acf
Fix (studio-reported) crash when linking/appending data in some cases.
Recent refactor (rB7be1c8bbae76f49f) removed a null check in WM code,
that is mandatory in some cases like e.g. liboverride apply code on
linked data.
===================================================================
M source/blender/windowmanager/intern/wm_event_system.cc
===================================================================
diff --git a/source/blender/windowmanager/intern/wm_event_system.cc b/source/blender/windowmanager/intern/wm_event_system.cc
index d136d3831c9..2bba0ac802d 100644
--- a/source/blender/windowmanager/intern/wm_event_system.cc
+++ b/source/blender/windowmanager/intern/wm_event_system.cc
@@ -280,6 +280,16 @@ static bool note_cmp_for_queue_fn(const void *a, const void *b)
void WM_event_add_notifier_ex(wmWindowManager *wm, const wmWindow *win, uint type, void *reference)
{
+ if (wm == nullptr) {
+ /* There may be some cases where e.g. `G_MAIN` is not actually the real current main, but some
+ * other temporary one (e.g. during liboverride processing over linked data), leading to null
+ * window manager.
+ *
+ * This is fairly bad and weak, but unfortunately RNA does not have any way to operate over
+ * another main than G_MAIN currently. */
+ return;
+ }
+
wmNotifier note_test = {nullptr};
note_test.window = win;
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