**** compiler Digital Mars D 2060
S1.c.offsetof (should be 0) = 0
S1.u.offsetof (should be 2) = 4
S1.sizeof (should be 6) = 8
S2.c.offsetof (should be 0) = 0
S2.u.offsetof (should be 2) = 2
S2.sizeof (should be 6) = 8
S3.c.offsetof (should be 0) = 0
S3.u.offsetof (should be 2) = 2
S3.sizeof (should be 6) = 8
