bpo-41875: Use __builtin_unreachable when possible (GH-22433)
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@ -118,7 +118,9 @@
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"We've reached an unreachable state. Anything is possible.\n" \
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"The limits were in our heads all along. Follow your dreams.\n" \
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"https://xkcd.com/2200")
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#elif defined(__GNUC__) || defined(__clang__) || defined(__INTEL_COMPILER)
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#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5))
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# define Py_UNREACHABLE() __builtin_unreachable()
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#elif defined(__clang__) || defined(__INTEL_COMPILER)
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# define Py_UNREACHABLE() __builtin_unreachable()
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#elif defined(_MSC_VER)
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# define Py_UNREACHABLE() __assume(0)
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@ -0,0 +1,2 @@
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Update :c:macro:`Py_UNREACHABLE` to use __builtin_unreachable() if only the
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compiler is able to use it. Patch by Dong-hee Na.
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