go issue4066 源码
golang issue4066 代码
文件路径：/test/fixedbugs/issue4066.go
// run
// Copyright 2012 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.
// issue 4066: return values not being spilled eagerly enough
package main
func main() {
n := foo()
if n != 2 {
println(n)
panic("wrong return value")
}
}
type terr struct{}
func foo() (val int) {
val = 0
defer func() {
if x := recover(); x != nil {
_ = x.(terr)
}
}()
for {
val = 2
foo1()
}
panic("unreachable")
}
func foo1() {
panic(terr{})
}
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