/usr/share/go-1.10/test/fixedbugs/issue18595.go is in golang-1.10-src 1.10.1-1ubuntu2.
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 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | // run
// Copyright 2017 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.
// This test makes sure that itabs are unique.
// More explicitly, we require that only one itab structure exists for the pair of
// a given compile-time interface type and underlying concrete type.
// Ensuring this invariant enables fixes for 18492 (improve type switch code).
package main
type I interface {
M()
}
type J interface {
M()
}
type T struct{}
func (*T) M() {}
func main() {
test1()
test2()
}
func test1() {
t := new(T)
var i1, i2 I
var j interface {
M()
}
i1 = t
j = t
i2 = j
if i1 != i2 {
panic("interfaces not equal")
}
}
func test2() {
t := new(T)
i1 := (I)(t)
i2 := (I)((interface {
M()
})((J)(t)))
if i1 != i2 {
panic("interfaces not equal")
}
}
|