[PATCH] D68820: win: Move Parallel.h off concrt to cross-platform code

[Billy Robert O'Neal III via Phabricator via llvm-commits]

BillyONeal added a comment.

BTW `ThreadPoolExecutor` has undefined behavior since there's a detached thread touching the standard library when the program exits violating [basic.start.term]/6. Detached threads are almost never safe.


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  https://reviews.llvm.org/D68820/new/

https://reviews.llvm.org/D68820