Alvin Wong a54b6b3318 [sanitizer][win] Fix Atexit() on MinGW asan_dynamic runtime ...

Some functions of asan depends on `Atexit()` handlers. On Windows, this
is implemented in ad3ec82bb1 to queue the
handlers in a vector then register them with `atexit()` only after the
CRT is fully initialized. However, this is broken on MinGW with
asan_dynamic runtime due to different initialization order. This change
fixes the issue by making sure that `Atexit()` can call `atexit()`
directly past the pre-initialization phase.

This fixes two asan test cases on MinGW.

Differential Revision: https://reviews.llvm.org/D147413

2023-04-10 23:21:16 +08:00

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