gcc/testsuite/gcc.dg/20150306-1.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target size32plus } */
   3 /* { dg-options "-fstrict-volatile-bitfields" } */
   4
   5 struct s
   6 {
   7   char x : 8;
   8   unsigned int y : 31;
   9 } __attribute__((packed));
  10
  11 volatile struct s global;
  12
  13 int
  14 main ()
  15 {
  16   global.y = 0x7FFFFFFF;
  17   if (global.y != 0x7FFFFFFF)
  18     __builtin_abort ();
  19   return 0;
  20 }