[libcxx-commits] [libcxx] [ASan][libc++] Turn on ASan annotations for short strings (PR #79536)

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AdvenamTacet wrote:

> For 3, I suppose the problem is that we (libc++) use has_feature(asan) to check if asan is enabled. That'l checks if asan is enabled for the current TU, but we really want "is asan used in any TU". I.e. having a user-settable knob instead of has_feature (and maybe use has_feature as fallback if the knob isn't explicitly set).

I don't think it's feasible.

https://github.com/llvm/llvm-project/pull/79536