Alpha2 crashes on models with infill modifiers

[mix579]

Description of the bug

For some—but not all—models with modifiers I get the Alpha-2 to crash when I select Slice now. I have only tested it with models that had infill modifiers. But then again, some models do not crash.

Project file & How to reproduce

Here's one that immediately crashes when Slice now is selected
Dremel Holder.3mf.zip

It's a simple infill modifier.

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

2.6-alpha 2

Operating system

Macbook Air M1 running MacOS Ventura 13.2

Printer model

Mini+ and Mk3S+

[lukasmatena]

Thanks, reproduced. We will fix it. This crash leads to Layer::sort_perimeters_into_islands.

[bubnikv]

Fixed with 3cb2f5f

[kubispe1]

As @bubnikv issue with modificators and support was fixed and tested.
I am closing