gcc/testsuite/gcc.target/i386/bitfield3.c

   1 // Test for bitfield alignment in structs on IA-32
   2 // { dg-do run }
   3 // { dg-options "-O2" }
   4 // { dg-options "-mno-align-double -mno-ms-bitfields" { target *-*-interix* } }
   5
   6 extern void abort (void);
   7 extern void exit (int);
   8
   9 struct X {
  10   int : 32;
  11 };
  12
  13 struct Y {
  14   int i : 32;
  15 };
  16
  17 int main () {
  18   if (__alignof__(struct X) != 1)
  19     abort ();
  20   if (__alignof__(struct Y) != 4)
  21     abort ();
  22
  23   exit (0);
  24 }