gcc/testsuite/gcc.dg/pr82389.c

   1 /* PR tree-optimization/82389 */
   2 /* { dg-do compile { target lp64 } } */
   3 /* { dg-options "-w -O3" } */
   4
   5 struct S { char s[0x40000000]; } s;
   6
   7 void
   8 foo (struct S *p)
   9 {
  10   char b[0x0ffffffff0000000L];
  11   *(struct S *)&b[0x0fffffffef000000L] = s;
  12   *p = *(struct S *)&b[0x0fffffffefffffffL];
  13 }