用于进行gcc测试

				/* { dg-options "-I. -Winvalid-pch" } */								#define DEFINED_VALUE 3								#include "warn-1.h"/* { dg-warning "not used because .DEFINED_VALUE. is defined" } */				/* { dg-error "No such file" "" { target *-*-* } 5 } */				/* { dg-error "they were invalid" "" { target *-*-* } 5 } */												int main(void) 				{				  return DEFINED_VALUE;				}