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There are two things that make running MLIR tests with ASan on a mac tedious: 1. The `DYLD_INSERT_LIBRARIES` environment variable needs to be set to point to `libclang_rt.asan_osx_dynamic.dylib` 2. Mac is wrapping Python, which means that the `DYLD_INSERT_LIBRARIES` environment variable is not being respected in the Python tests. The solution is to find and use a non-wrapped Python binary. With the above two changes, ASan works out of the box on mac's by setting the `-DLLVM_USE_SANITIZER=Address` cmake flag. I have stolen most of the code in this PR from other LLVM projects. It may be a good idea to reconcile it somewhere.
17 lines
774 B
Python
17 lines
774 B
Python
# On macOS, system python binaries like /usr/bin/python and $(xcrun -f python3)
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# are shims. They do some light validation work and then spawn the "real" python
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# binary. Find the "real" python by asking dyld -- sys.executable reports the
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# wrong thing more often than not. This is also useful when we're running under
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# a Homebrew python3 binary, which also appears to be some kind of shim.
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def getDarwinRealPythonExecutable():
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import ctypes
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dyld = ctypes.cdll.LoadLibrary("/usr/lib/system/libdyld.dylib")
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namelen = ctypes.c_ulong(1024)
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name = ctypes.create_string_buffer(b"\000", namelen.value)
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dyld._NSGetExecutablePath(ctypes.byref(name), ctypes.byref(namelen))
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return name.value.decode("utf-8").strip()
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print(getDarwinRealPythonExecutable())
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