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https://github.com/golang/go
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50 lines
711 B
Go
50 lines
711 B
Go
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// run
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// Copyright 2018 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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package main
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import "strings"
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var X interface{}
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type T struct{}
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func scopes() {
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p, ok := recover().(error)
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if ok && strings.Contains(p.Error(), "different scopes") {
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return
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}
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panic(p)
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}
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func F1() {
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type T struct{}
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X = T{}
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}
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func F2() {
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type T struct{}
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defer scopes()
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_ = X.(T)
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}
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func F3() {
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defer scopes()
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_ = X.(T)
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}
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func F4() {
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X = T{}
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}
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func main() {
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F1() // set X to F1's T
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F2() // check that X is not F2's T
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F3() // check that X is not package T
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F4() // set X to package T
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F2() // check that X is not F2's T
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}
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