[compiler-rt] [rtsan] Add test to ensure coroutines get caught (PR #111049)

[Chris Apple via llvm-commits]

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@@ -0,0 +1,31 @@
+// RUN: %clangxx -std=c++20 -fsanitize=realtime %s -o %t
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cjappl wrote:

This is only valid in C++20, what should I do to ensure it doesn't affect systems without c++20? This test should be a no-op in that case

https://github.com/llvm/llvm-project/pull/111049