go issue19275 源码
golang issue19275 代码
文件路径：/test/fixedbugs/issue19275.go
// run
// Copyright 2017 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
import (
"fmt"
)
type PI struct {
Enabled bool
}
type SI struct {
M map[string]*PI
}
//go:noinline
func (s *SI) test(name string) (*int, error) {
n := new(int)
*n = 99
if err := addUpdate(n, s.M[name].Enabled, "enabled"); err != nil { // this was miscompiled
return nil, fmt.Errorf(" error adding update for enable flag %t : %s",
s.M[name].Enabled, err)
}
return n, nil
}
//go:noinline
func addUpdate(n *int, in interface{}, s ...string) error {
if *n != 99 {
println("FAIL, *n should be 99, not", *n)
}
return nil
}
func main1() {
s := &SI{make(map[string]*PI)}
s.M["dog"] = &PI{}
s.test("dog")
}
//go:noinline
func g(b *byte, i interface{}) error {
if *b != 17 {
println("FAIL, *b should be 17, not", *b)
}
return nil
}
//go:noinline
func f(x *byte, m map[string]*bool) {
if err := g(x, *m["hello"]); err != nil { // this was miscompiled
return
}
}
func main2() {
m := make(map[string]*bool)
x := false
m["hello"] = &x
b := byte(17)
f(&b, m)
}
func main() {
main2()
main1()
}
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