C++ Test Suite Infinite Runtime on M1 Mac

[Shiyuan-eric]

Hi there,

When I was trying to run the C++ test suite, infinite runtime occurs at the SetCover_test in RumtimeLibTest. The last while loop in this test is causing this issue, which is around line 538. Since I am able to pass the rest of tests, I guess something unique in this test was the reason. Perhaps this test use some technique which is not supported by the M1 chip?

Thank you for your feedback.