gcc/testsuite/gcc.c-torture/execute/bitfld-2.c

   1 /* Test whether bit field boundaries aren't advanced if bit field type
   2    has alignment large enough.  */
   3 extern void abort (void);
   4 extern void exit (int);
   5
   6 struct A {
   7   unsigned short a : 5;
   8   unsigned short b : 5;
   9   unsigned short c : 6;
  10 };
  11
  12 struct B {
  13   unsigned short a : 5;
  14   unsigned short b : 3;
  15   unsigned short c : 8;
  16 };
  17
  18 int main ()
  19 {
  20   /* If short is not at least 16 bits wide, don't test anything.  */
  21   if ((unsigned short) 65521 != 65521)
  22     exit (0);
  23
  24   if (sizeof (struct A) != sizeof (struct B))
  25     abort ();
  26
  27   exit (0);
  28 }