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https://github.com/golang/go
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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
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Interface values containing types that cannot be compared for equality.
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package main
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func main() {
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cmp(1)
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var (
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m map[int]int
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s struct{ x []int }
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f func()
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)
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noCmp(m)
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noCmp(s)
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noCmp(f)
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}
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func cmp(x interface{}) bool {
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return x == x
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}
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func noCmp(x interface{}) {
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shouldPanic(func() { cmp(x) })
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}
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func shouldPanic(f func()) {
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defer func() {
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if recover() == nil {
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panic("function should panic")
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}
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}()
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f()
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}
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