package main type ( T1 struct{ Path [12]int8 } T2 struct{ Path *[12]int8 } ) var ( t11 = &T1{} t21 = &T2{} ) func main() { b := [12]byte{} t12 := &T1{} t22 := &T2{} b11 := (*[len(t11.Path)]byte)(&b) b12 := (*[len(t12.Path)]byte)(&b) b21 := (*[len(t21.Path)]byte)(&b) b22 := (*[len(t22.Path)]byte)(&b) println(len(b11), len(b12), len(b21), len(b22)) } // Output: // 12 12 12 12