On Sun, Jan 20, 2019 at 2:32 PM 伊藤和也 <kazya.ito.dr...@gmail.com> wrote:
>
> type a interface{
> m()
> }
>
> type abc int
> func (abc) m() {}
>
> func main() {
> var v a
> v.m()
^^^^^^
v is nil. It is declared but never assigned a value. You are
dereferencing v to call m, causing nil ptr dereference.
> }
>
> panic: runtime error: invalid memory address or nil pointer dereference
> [signal 0xc0000005 code=0x0 addr=0x0 pc=0x44e236]
>
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