gcc/testsuite/gcc.dg/builtins-13.c

   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
  10 typedef __SIZE_TYPE__ size_t;
  11
  12 extern void abort (void);
  13 extern void *malloc (size_t);
  14 extern void *calloc (size_t,size_t);
  15
  16 extern void link_error (void);
  17
  18 static int x;
  19
  20 void test1(void)
  21 {
  22   int *ptr1, *ptr2;
  23
  24   ptr1 = &x;
  25   ptr2 = (int*) malloc (sizeof (int));
  26
  27   *ptr1 = 12;
  28   *ptr2 = 8;
  29
  30   if (*ptr1 != 12)
  31     link_error();
  32 }
  33
  34 void test2(void)
  35 {
  36   int *ptr1, *ptr2;
  37
  38   ptr1 = &x;
  39   ptr2 = (int*) calloc (1, sizeof (int));
  40
  41   *ptr1 = 12;
  42   *ptr2 = 8;
  43
  44   if (*ptr1 != 12)
  45     link_error ();
  46 }
  47
  48 int main()
  49 {
  50   test1 ();
  51   test2 ();
  52   return 0;
  53 }
  54
  55 #ifndef __OPTIMIZE__
  56 void link_error (void)
  57 {
  58   abort ();
  59 }
  60 #endif
  61