clang/test/Modules/Inputs/DebugDwoId.h - llvm-project - Git at Google

 #ifndef DEBUG_DWO_ID_H
 #define DEBUG_DWO_ID_H
 struct Dummy {};
 #endif
	#ifndef DEBUG_DWO_ID_H
	#define DEBUG_DWO_ID_H
	struct Dummy {};
	#endif