20010122-1.c

来自「this is a gcc file, you can download it 」· C语言 代码 · 共 203 行

extern void exit (int);
extern void abort (void);
extern void *alloca (__SIZE_TYPE__);
char *dummy (void);

#define NOINLINE __attribute__((noinline))

void *save_ret1[6];
void *test4a (char *);
void *test5a (char *);
void *test6a (char *);

void NOINLINE *test1 (void)
{
  void * temp;
  temp = __builtin_return_address (0);
  return temp;
}

void NOINLINE *test2 (void)
{
  void * temp;
  dummy ();
  temp = __builtin_return_address (0);
  return temp;
}

void NOINLINE *test3 (void)
{
  void * temp;
  temp = __builtin_return_address (0);
  dummy ();
  return temp;
}

void NOINLINE *test4 (void)
{
  char * save = (char*) alloca (4);
  
  return test4a (save);
}

void *NOINLINE test4a (char * p)
{
  void * temp;
  temp = __builtin_return_address (1);
  return temp;
}

void NOINLINE *test5 (void)
{
  char * save = (char*) alloca (4);
  
  return test5a (save);
}

void NOINLINE *test5a (char * p)
{
  void * temp;
  dummy ();
  temp = __builtin_return_address (1);
  return temp;
}

void NOINLINE *test6 (void)
{
  char * save = (char*) alloca (4);
  
  return test6a (save);
}

void NOINLINE *test6a (char * p)
{
  void * temp;
  temp = __builtin_return_address (1);
  dummy ();
  return temp;
}

void *(*func1[6])(void) = { test1, test2, test3, test4, test5, test6 };

char * NOINLINE call_func1 (int i)
{
  save_ret1[i] = func1[i] ();
}

static void *ret_addr;
void *save_ret2[6];
void test10a (char *);
void test11a (char *);
void test12a (char *);

void NOINLINE test7 (void)
{
  ret_addr = __builtin_return_address (0);
  return;
}

void NOINLINE test8 (void)
{
  dummy ();
  ret_addr = __builtin_return_address (0);
  return;
}

void NOINLINE test9 (void)
{
  ret_addr = __builtin_return_address (0);
  dummy ();
  return;
}

void NOINLINE test10 (void)
{
  char * save = (char*) alloca (4);
  
  test10a (save);
}

void NOINLINE test10a (char * p)
{
  ret_addr = __builtin_return_address (1);
  return;
}

void NOINLINE test11 (void)
{
  char * save = (char*) alloca (4);
  
  test11a (save);
}

void NOINLINE test11a (char * p)
{
  dummy ();
  ret_addr = __builtin_return_address (1);
  return;
}

void NOINLINE test12 (void)
{
  char * save = (char*) alloca (4);
  
  test12a (save);
}

void NOINLINE test12a (char * p)
{
  ret_addr = __builtin_return_address (1);
  dummy ();
  return;
}

char * dummy (void)
{
  char * save = (char*) alloca (4);
  
  return save;
}

void (*func2[6])(void) = { test7, test8, test9, test10, test11, test12 };

void NOINLINE call_func2 (int i)
{
  func2[i] ();
  save_ret2[i] = ret_addr;
}

int main (void)
{
  int i;

  for (i = 0; i < 6; i++) {
    call_func1(i);
  }

  if (save_ret1[0] != save_ret1[1]
      || save_ret1[1] != save_ret1[2])
    abort ();
  if (save_ret1[3] != save_ret1[4]
      || save_ret1[4] != save_ret1[5])
    abort ();
  if (save_ret1[3] && save_ret1[0] != save_ret1[3])
    abort ();


  for (i = 0; i < 6; i++) {
    call_func2(i);
  }

  if (save_ret2[0] != save_ret2[1]
      || save_ret2[1] != save_ret2[2])
    abort ();
  if (save_ret2[3] != save_ret2[4]
      || save_ret2[4] != save_ret2[5])
    abort ();
  if (save_ret2[3] && save_ret2[0] != save_ret2[3])
    abort ();

  exit (0);
}