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d74a637206
The fix for bug 429864 - "s390x: C++ atomic test_and_set yields false-positive memcheck diagnostics" changes the memcheck behavior at various compare-and-swap instructions. The comparison between the old and expected value now always yields a defined result, even if the input values are (partially) undefined. However, some existing test cases explicitly verify that memcheck complains about the use of uninitialised values here. These test cases are no longer valid. Remove them.