/usr/share/go-1.6/test/interface/fail.go is in golang-1.6-src 1.6.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | // run
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Test that interface conversion fails when method is missing.
package main
type I interface {
Foo()
}
func main() {
shouldPanic(p1)
}
func p1() {
var s *S
var i I
var e interface{}
e = s
i = e.(I)
_ = i
}
type S struct{}
func (s *S) _() {}
func shouldPanic(f func()) {
defer func() {
if recover() == nil {
panic("function should panic")
}
}()
f()
}
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