[PATCH] D60722: gn build: Add a `use_asan` build arg that can be used to build asanified clangs and llds

[Peter Collingbourne via Phabricator via llvm-commits]

pcc added a comment.

We shouldn't be compiling any of the sanitizer runtimes with sanitizers, that's pretty much guaranteed not to work.

We could do something like this to disable asan in non-default toolchains:
https://cs.chromium.org/chromium/src/build/config/sanitizers/sanitizers.gni?l=123


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https://reviews.llvm.org/D60722