[libcxx-commits] [PATCH] D116050: [libc++] Disable coverage with sanitize-coverage=0

[Fangrui Song via Phabricator via libcxx-commits]

MaskRay added subscribers: phosek, MaskRay.
MaskRay added a comment.

`-fsanitize-coverage` was introduced in D31639 <https://reviews.llvm.org/D31639> (CC @phosek).

At a glance, the intention might to catch layering issue (libc++abi is very low, a runtime library using libc++abi used by libc++abi may be problematic). For many -fsanitize-coverage=, AIUI the `__sanitizer_cov_*` hooks are provided by the user. If the user hooks use C++, the layering may be weird.


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  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D116050/new/

https://reviews.llvm.org/D116050