用于进行gcc测试

				#include "struct-layout-1.h"								#define TX(n, type, attrs, fields, ops) extern void test##n (void);				#include "struct-layout-1_test.h"				#undef TX								int main (void)				{				#define TX(n, type, attrs, fields, ops)   test##n ();				#include "struct-layout-1_test.h"				#undef TX				  if (fails)				    abort ();				  exit (0);				}