[PATCH] D20913: [asan] add primitives that allow coroutine implementations

[Dmitry Vyukov via llvm-commits]

dvyukov added a comment.

In http://reviews.llvm.org/D20913#450731, @blastrock wrote:

> Because then I will not be able to write something like
>
>   __sanitizer_enter();
>   ThrowAndCatch();
>   swapcontext();
>
>
> because __sanitizer_enter() will be called directly inside swapcontext().


This can be tested by sending signals during the switch and doing ThrowAndCatch inside the handler.
That would be a very useful test on its own. Signals are known to be tricky and cause problems.
You can find some existing tests that setup periodic timer signals (at lest there are few in tsan).


http://reviews.llvm.org/D20913