microsoft / microsoft/mimalloc
Assertion failed on Apple arm64
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Description
Hey!
I am getting this error when using mimalloc's dev branch on Apple arm64 (M1) when compiling in Debug mode:
```
mimalloc: assertion failed: at "./extlib/mimalloc/src/heap.c":188, mi_heap_get_backing
assertion: "bheap->thread_id == _mi_thread_id()"
```
Coming from here: https://github.com/microsoft/mimalloc/blob/master/src/heap.c#L188
When building in Release mode, the application seems runs fine though.
I will try to do a bisect to see where this got introduced, but am hoping that I can get some background information on why this assertion is there / what exactly it is checking and what potential problems this can cause.
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- Read the whole issue, then the project's contributing guide.
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Research direction
Start at extlib/mimalloc/src/heap.c:188 and inspect mi_heap_get_backing and the reported thread_id assertion. Reproduce the failure on Apple arm64 in Debug and compare with Release, then use the reporter's planned bisect to identify the introducing change. Done means establishing the cause and potential impact; the issue does not name a test or patch target.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- operating-systems, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100