by NtVisigoth:

My Go installation with "go version":
go version go1.2 windows/amd64

I see in "GOROOT\src\pkg\debug\pe\file.go" unnessary type cast in a function
with prototype "func NewFile(r io.ReaderAt) (*File, error)"

        s := new(Section)
        s.SectionHeader = SectionHeader{
// skiped
            VirtualSize:          uint32(sh.VirtualSize),
// skiped more lines
        }

Why in this part of code use type cast? Field types of Section and SectionHeader32
structures are equalent!