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							// RUN: clang-check "%s" -extra-arg=-Wunimplemented-warning -extra-arg-before=-Wunimplemented-warning-before -- -c 2>&1 | FileCheck %s
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							// CHECK: unknown warning option '-Wunimplemented-warning-before'
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							// CHECK: unknown warning option '-Wunimplemented-warning'
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							void a(){}
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