S+4 Union(size: 5)
S+12 Union(size: 5)
S+20 Union(size: 5)
S+28 Union(size: 5)
S+36 Union(size: 5)
S+44 Union(size: 5)
S+52 Union(size: 5)
S+60 Union(size: 5)
S+68 Union(size: 5)
S+76 Union(size: 5)
=>
P(S+0 uint32, ret:eax uint32) Union(size: 5)
