[compiler-rt] [asan] Use InternalMmapVector for error_message_buffer, reallocate wh… (PR #77488)

[Vitaly Buka via llvm-commits]

vitalybuka wrote:

> Not sure if InternalScopedString is more appropriate for error_message_buffer, I did a grep, not found any usage of InternalScopedString as a global variable...

I believe we need some refactoring to avoid dynamic initializer of InternalScopedString global.
If you like, you can try to investigate.

If not, please try thread_registry_placeholder  approach


https://github.com/llvm/llvm-project/pull/77488