1  /* Copyright (C) 2003  Free Software Foundation.
       2  
       3     Verify that the malloc-like __builtin_ allocation functions are
       4     correctly aliased by the compiler.
       5  
       6     Written by Roger Sayle, 12th April 2003.  */
       7  
       8  /* { dg-do link } */
       9  /* { dg-options "-ansi" } */
      10  
      11  typedef __SIZE_TYPE__ size_t;
      12  
      13  extern void abort (void);
      14  extern void *malloc (size_t);
      15  extern void *calloc (size_t,size_t);
      16  
      17  extern void link_error (void);
      18  
      19  static int x;
      20  
      21  void test1(void)
      22  {
      23    int *ptr1, *ptr2;
      24  
      25    ptr1 = &x;
      26    ptr2 = (int*) malloc (sizeof (int));
      27  
      28    *ptr1 = 12;
      29    *ptr2 = 8;
      30  
      31    if (*ptr1 != 12)
      32      link_error();
      33  }
      34  
      35  void test2(void)
      36  {
      37    int *ptr1, *ptr2;
      38  
      39    ptr1 = &x;
      40    ptr2 = (int*) calloc (1, sizeof (int));
      41  
      42    *ptr1 = 12;
      43    *ptr2 = 8;
      44  
      45    if (*ptr1 != 12)
      46      link_error ();
      47  }
      48  
      49  int main()
      50  {
      51    test1 ();
      52    test2 ();
      53    return 0;
      54  }
      55  
      56  #ifndef __OPTIMIZE__
      57  void link_error (void)
      58  {
      59    abort ();
      60  }
      61  #endif
      62