gcc/testsuite/gcc.c-torture/unsorted/andmem.c

   1 void p1 (p) int *p;
   2 { *p &= ~0xff;
   3 }
   4 void p2 (p) int *p;
   5 { *p &= ~0xff00;
   6 }
   7 void p3 (p) int *p;
   8 { *p &= ~0xffff0000;
   9 }
  10 void p4 (p) int *p;
  11 { *p &= ~0xffff;
  12 }
  13
  14 main ()
  15 {
  16   int a;
  17
  18   a = 0x12345678;  p1 (&a);  printf ("%x\n", a);
  19   a = 0x12345678;  p2 (&a);  printf ("%x\n", a);
  20   a = 0x12345678;  p3 (&a);  printf ("%x\n", a);
  21   a = 0x12345678;  p4 (&a);  printf ("%x\n", a);
  22 }