mirror of
https://github.com/golang/go
synced 2024-11-17 17:54:48 -07:00
2ece2f58ee
Apply sed with: 1s,^// $G $D/$F.go && $L $F.$A && ./$A.out || echo.*,// run, 1s,^// $G $D/$F.go || echo.*,// compile, R=golang-dev, rsc CC=golang-dev https://golang.org/cl/5656099
40 lines
605 B
Go
40 lines
605 B
Go
// run
|
|
|
|
// Copyright 2011 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.
|
|
|
|
// Interface values containing types that cannot be compared for equality.
|
|
|
|
package main
|
|
|
|
func main() {
|
|
cmp(1)
|
|
|
|
var (
|
|
m map[int]int
|
|
s struct{ x []int }
|
|
f func()
|
|
)
|
|
noCmp(m)
|
|
noCmp(s)
|
|
noCmp(f)
|
|
}
|
|
|
|
func cmp(x interface{}) bool {
|
|
return x == x
|
|
}
|
|
|
|
func noCmp(x interface{}) {
|
|
shouldPanic(func() { cmp(x) })
|
|
}
|
|
|
|
func shouldPanic(f func()) {
|
|
defer func() {
|
|
if recover() == nil {
|
|
panic("function should panic")
|
|
}
|
|
}()
|
|
f()
|
|
}
|