Test case for r321396

Any hashing for methods should be able to compile this test case without
emitting an error. Since the class and method come from the same header from
each module, there should

Test case for r321396

Any hashing for methods should be able to compile this test case without
emitting an error. Since the class and method come from the same header from
each module, there should be no messages about ODR violations.

llvm-svn: 321924

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