Renaming sun object (in outliner) creates duplicate; undoing causes segfault

[Diti]

The PSA add-on crashes (__init__.py, line 147 in sun_handler) during undoing (Ctrl–Z) if PSA’s sun object has been renamed in the Outliner’s View Layer (where the list of collections and objects is displayed in Blender’s GUI). Undo is a natural operation because the renaming creates a duplicate sun (so the add-on doesn’t like the sun being renamed).

General information

• Blender version: 4.0.2.
• Addon version: 1.7.1.
• Engine: irrelevant.
• Operating System: NixOS.

Consistent segfaults

1. Factory startup.
2. Enable add-on for the scene.
3. Double-click the Starlight Sun item in the outliner, and rename it (to “global.sun” in most of my scenes).
4. Undo with Ctrl–Z.

Inconsistent segfaults

I have gotten other related segfaults that aren’t related to the outliner, but I haven’t been able to fully replicate yet.

• add-on crashes most of the time when I rename & Ctrl–Z while I am directly placed in the OBJECT context in the GUI (without having visited the DATA context first), for example by having enabled PSA using the N-Panel.
• crash doesn’t happen if I visited the DATA context before visiting the OBJECT context and then renaming & Ctrl–Z.
• sometimes doesn’t crash at all when doing the renaming & Ctrl–Z in the OBJECT context (maybe depending on whether Blender is run with or without depgraph debug ?).

Either way, crashes always happen if the renaming happened in the outliner.

[Diti]

This requires the crash label, but I can’t add it myself.