用于进行gcc测试

				#include 				#include 				extern void abort (void);				extern int inside_main;								int				printf (const char *string, ...)				{				  va_list ap;				  int r;				#ifdef __OPTIMIZE__				  if (inside_main)				    abort();				#endif				  va_start (ap, string);				  r = vprintf (string, ap);				  va_end (ap);				  return r;				}												/* Locking stdio doesn't matter for the purposes of this test.  */				int				printf_unlocked (const char *string, ...)				{				  va_list ap;				  int r;				#ifdef __OPTIMIZE__				  if (inside_main)				    abort();				#endif				  va_start (ap, string);				  r = vprintf (string, ap);				  va_end (ap);				  return r;				}