src/third_party/llvm-project/clang-tools-extra/test/modularize/Inputs/InconsistentHeader1.h - cobalt - Git at Google

 // Define symbol such that a declaration exists when this header
 // is included, but not when InconsistentHeader2.h is included.
 #define SYMBOL1 1
 #include "InconsistentSubHeader.h"
	// Define symbol such that a declaration exists when this header
	// is included, but not when InconsistentHeader2.h is included.
	#define SYMBOL1 1
	#include "InconsistentSubHeader.h"