Unity Issue Tracker - Using stackalloc causes a hard crash with stack buffer overflow exception code

Fixed in 2020.1

Fixed in 2018.4

Planned for 2019.4

Votes

Found in

Issue ID

Regression

Using stackalloc causes a hard crash with stack buffer overflow exception code

-

Jul 30, 2019

How to reproduce:
1. Open the attached "TestCrash.zip" project
2. Open scene "SampleScene"
3. Enter Play mode

Results: The Editor crashes and the bug reporter does not appear

Reproducible with: 2018.4.5f1, 2019.1.14f1, 2019.2.1f1, 2019.3.0a11

Note: Could not test with the 2017.4 branch since the code uses features that are not part of the C# 6.0 language specification

Resolution Note (fix version 2020.1):

Fix crash that may occur when using stackalloc.

Enverex

Nov 10, 2020 09:40

Not sure why this has been closed, also can't vote for that reason. The issue was logged against 2018 and 2019 but the fix has only been listed for 2018 and 2020. Any reason why 2019 (which has a current LTS) has been ignored?
ohzee

Nov 10, 2020 08:49

This bugfix is sadly not fixed on 2019.4 which blocks progress on a project that has to stay on that version of Unity, possible if this can be backported?
Frooxius

Sep 28, 2020 19:59

Are the plans to backport this to 2019.4? I have a project that's affected by this and even using 2019.4.11f1 will result in a crash.