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Fixed in 1.0.0-pre.1, 0.7.1-preview.1



Found in [Package]


Issue ID




[Memory Profiler] crash in DynamicArray.ResizeInternalBuffer when opening a capture

Package: Memory Profiler


How to reproduce:
This bug is a bit hard to repro consistently outside of a strict test harness, but it would usually reproduce (inconsistently) when open a snapshot with the memory profiler. Depending on the memory state of the Memory Profiler, as well as the snapshot (some may be more prone to triggering this bug), opening a snapshot will crash the Editor.

The resulting Editor.log file will contain lines like:

Managed Stacktrace:
at <unknown> <0xffffffff>
at Unity.Collections.LowLevel.Unsafe.UnsafeUtility:MemCpy <0x000d6>
at Unity.MemoryProfiler.Editor.Containers.DynamicArray`1:ResizeInternalBuffer <0x0026a>
at Unity.MemoryProfiler.Editor.Containers.DynamicArray`1:Resize <0x00172>

Repro via the test harness:
1. Grab the git repro state of the Memory Profiler at changeset 3fff8117ce
2. Drop it into the Packages folder of an empty Unity Project
3. In the manifest.json:
-- add "nuget.moq": "1.0.0" to the list of dependencies
-- after the closing } "dependencies" add:
"testables": [
4. Open that project and in it, open Window > General > Test Runner
5. filter for NoMemoryCorruptionOnResize and run that test

Expected results: The test passes.
Actual results: The Editor crashes.

Reproducible with: 2022.2.a16 Package version 0.7.0-preview.2
Unity base version should be irrelevant, earlier package versions also have the bug but not the test to repro it.

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