A crash on undo after using the Shape Builder tool

Summary:

Inkscape segfaults on undo after using the Shape Builder tool.

Steps to reproduce:

• open Inkscape
• draw a rectangle
• save your drawing as an Inkscape SVG
• with the rectangle selected, activate the Shape Builder tool
• without performing any operation, switch back to the Select tool
• note that an asterisk has appeared next to the file name in the window's title bar
• press Ctrl-Z to undo

What happened?

A segfault with the following backtrace: backtrace.txt

What should have happened?

• since no operation was performed with the Shape Builder tool, the document should have remained virgin
• undoing should not be possible (and it certainly shouldn't cause a crash).

Version info

Inkscape 1.3-dev (cbd7a5cc0f, 2022-10-16)