gcc/testsuite/gcc.dg/volatile-bitfields-1.c

   1 /* { dg-options "-fstrict-volatile-bitfields" } */
   2 /* { dg-do run } */
   3
   4 extern int puts(const char *);
   5 extern void abort(void) __attribute__((noreturn));
   6
   7 typedef struct {
   8   volatile unsigned short a:8, b:8;
   9 } BitStruct;
  10
  11 BitStruct bits = {1, 2};
  12
  13 void check(int i, int j)
  14 {
  15   if (i != 1 || j != 2) puts("FAIL"), abort();
  16 }
  17
  18 int main ()
  19 {
  20   check(bits.a, bits.b);
  21
  22   return 0;
  23 }