go bug113 源码
golang bug113 代码
文件路径：/test/fixedbugs/bug113.go
// 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.
package main
type I interface{}
func foo1(i int) int { return i }
func foo2(i int32) int32 { return i }
func main() {
var i I
i = 1
var v1 = i.(int)
if foo1(v1) != 1 {
panic(1)
}
var v2 = int32(i.(int))
if foo2(v2) != 1 {
panic(2)
}
shouldPanic(p1)
}
func p1() {
var i I
i = 1
var v3 = i.(int32) // This type conversion should fail at runtime.
if foo2(v3) != 1 {
panic(3)
}
}
func shouldPanic(f func()) {
defer func() {
if recover() == nil {
panic("function should panic")
}
}()
f()
}
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