I’ve come across a potential problem with:
Line 7: # RUN: llvm-ar rcs %t.a %t2 %t3 %t4
This line is not preceded by a delete of the target archive %t.a. Therefore, if for some reason this archive is corrupted, perhaps by a previous test run, then the test will fail.
I suggest that an ‘rm -f %t.a’ should be added to this and all similar lit tests calling llvm-ar with the ‘r’ command line flag. A similar file delete is used later in the same test before a call to llvm-ar.
I’m not quite sure of the correct way to file a potential bug against a test in bugzilla. This problem may be present in other lit tests.