gcc/testsuite/c-c++-common/pr51628-12.c

   1 /* PR c/51628.  */
   2 /* { dg-do compile { target int128 } } */
   3 /* { dg-options "-O" } */
   4
   5 struct tuple_t
   6 {
   7   char c[10];
   8   __int128_t i;
   9 } __attribute__((packed, aligned (8)));
  10
  11 typedef struct unaligned_int128_t_
  12 {
  13   __int128_t value;
  14 } __attribute__ ((packed, aligned(4))) unaligned_int128_t;
  15
  16 struct tuple_t p = {{0}, 1};
  17 unaligned_int128_t *addr = (unaligned_int128_t *)(&p.i);
  18 /* { dg-warning "may result in an unaligned pointer value" "" { target *-*-* } .-1 } */