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bevel modifier not responding
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Description

System Information
Operating system:
Graphics card:

Blender Version
Broken: (example: 2.80, edbf15d3c044, master, 2018-11-28, as found on the splash screen)
Worked: (optional)

Blender not responding and crashes on bevel modifier
Blender is not responding when changing the outer miter options on bevel modifier from sharp to patch.
This happens not on all objects but only on specific objects.

here is an example, when i change the options of the bevel modifier on slide_high objects, blender stop workings but works fine on other objects.

Event Timeline

Jacques Lucke (JacquesLucke) lowered the priority of this task from 90 to 50.

Looks like there is an infinite loop in adjust_the_cycle_or_chain (the first loop`).

Yeah, I looked at this briefly and it doesn't seem like something obvious. It looks like the adjchain is being built in a way that it never comes back to the start boundvert.

Thanks. I'll look at this. This code got less obviously correct when I put in miters. I already fixed on case like this; guess I didn't get them all.