TestThreadAPI.py test_StepInstruction started failing after #97493 Following assertion fails but I am not sure if test will pass after changing the test. AssertionError: 'void __cdecl call_me(bool)' != 'call_me(bool)' I have marked it as xfail I ll run it on a Windows machine to find an appropriate fix. https://lab.llvm.org/buildbot/#/builders/141/builds/476