Crash: Access Error when slicing

[seanmcne]

Description of the bug

When I download and try to slice this 3mf file slicer reports an access error and crashes. I opened it in 2.4.x and it works fine.
https://www.printables.com/model/42873-airbus-380-800/

Project file & How to reproduce

When I download and try to slice this 3mf file slicer reports an access error and crashes. I opened it in 2.4.x and it works fine.
https://www.printables.com/model/42873-airbus-380-800/

I tested on the RC as well as the release version of 2.5.0.

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

2.5.0 Release

Operating system

windows 11

Printer model

i3 mk3s+

[lukasmatena]

Thanks, I can confirm that it crashes in 2.5.0-beta1 but not in 2.5.0-alpha3. I managed to create a smaller 3MF to make debugging easier. I also reverted all settings to system values to make sure it is not caused by a weird combination of settings:
380_small.zip

It crashes on line size_t t_idx = area_sum_to_triangle_idx.upper_bound(t_sample)->second; in TriangleSetSampling.cpp because the area_sum_to_triangle_idx map is empty. @Godrak

[Godrak]

Thanks for the report, I confirm that there is a bug in the decimation algorithm for visibility, when all the lines of the model are very short. Currently as a workaround, you can use simplify model tool to decimate the model to some reasonable detail level.

[seanmcne]

I will use that as a workaround for now, thanks for the quick response!

[kubispe1]

In the upcoming release 2.6.0 short edge decimation algorithm is fixed, so the issue should work fine.
I am closing the issue for now.