heguanhui opened a new pull request, #63656:
URL: https://github.com/apache/doris/pull/63656
### What problem does this PR solve?
The glibc-compatibility module provides a custom memcpy implementation
(memcpy_aarch64.cpp) that overrides the global memcpy symbol via extern "C".
This is done to avoid dependency on a specific glibc symbol version (e.g.,
memcpy@@GLIBC_2.14) for portability.
However, libpthread's __pthread_initialize_minimal() calls memcpy during
very early process startup — before main(), before C++ static initialization,
and before ASAN shadow memory is set up. When ASAN is enabled, the custom
memcpy accesses memory that ASAN shadow has not yet mapped, resulting in
SIGSEGV.
This only affects aarch64 + ASAN because:
RELEASE builds have no ASAN shadow memory checks
x86_64 + ASAN does not exhibit this crash (different shadow memory layout
and initialization timing)
Problem Summary:
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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