redundant-preprocessor.h source code [clang-tools-extra/test/clang-tidy/checkers/readability/redundant-preprocessor.h]

1	#ifndef FOO
2	#ifndef FOO // this would warn, but not in a header
3	void f();
4	#endif
5	#endif
6

source code of clang-tools-extra/test/clang-tidy/checkers/readability/redundant-preprocessor.h