$ go tool compile p.go
$ go tool compile q.go
$ go tool link q.o
$ go tool objdump -s main.main a.out
TEXT main.main(SB) /tmp/q.go
  q.go:5            0x450970                64488b0c25f8ffffff      MOVQ FS:0xfffffff8, CX
  q.go:5            0x450979                488d842478ffffff        LEAQ 0xffffff78(SP), AX
  q.go:5            0x450981                483b4110                CMPQ 0x10(CX), AX
  q.go:5            0x450985                7641                    JBE 0x4509c8
  q.go:5            0x450987                4881ec08010000          SUBQ $0x108, SP
  q.go:5            0x45098e                4889ac2400010000        MOVQ BP, 0x100(SP)
  q.go:5            0x450996                488dac2400010000        LEAQ 0x100(SP), BP
  q.go:3            0x45099e                488d3c24                LEAQ 0(SP), DI
  q.go:3            0x4509a2                0f57c0                  XORPS X0, X0
  q.go:3            0x4509a5                48896c24f0              MOVQ BP, -0x10(SP)
  q.go:3            0x4509aa                488d6c24f0              LEAQ -0x10(SP), BP
  q.go:3            0x4509af                e8b0a3ffff              CALL 0x44ad64
  q.go:3            0x4509b4                488b6d00                MOVQ 0(BP), BP
  q.go:7            0x4509b8                488bac2400010000        MOVQ 0x100(SP), BP
  q.go:7            0x4509c0                4881c408010000          ADDQ $0x108, SP
  q.go:7            0x4509c7                c3                      RET
  q.go:5            0x4509c8                e8837dffff              CALL runtime.morestack_noctxt(SB)
  q.go:5            0x4509cd                eba1                    JMP main.main(SB)

$ cat p.go
package p

type t struct {
    b [256]byte
}

func F() interface{} {
    return &t{
            b: [256]byte{},
    }
}

$ cat q.go
package main

import "./p"

func main() {
    p.F()
}