go issue14591 源码
golang issue14591 代码
文件路径：/test/fixedbugs/issue14591.go
// run
// Copyright 2016 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.
// Test to make sure we don't think values are dead
// when they are assigned to a PPARAMOUT slot before
// the last GC safepoint.
package main
import (
"fmt"
"runtime"
)
// When a T is deallocated, T[1] is certain to
// get clobbered (the runtime writes 0xdeaddeaddeaddead there).
type T [4]int
func f() (r, s *T) {
r = &T{0x30, 0x31, 0x32, 0x33}
runtime.GC()
s = &T{0x40, 0x41, 0x42, 0x43}
runtime.GC()
return
}
func main() {
r, s := f()
if r[1] != 0x31 {
fmt.Printf("bad r[1], want 0x31 got %x\n", r[1])
}
if s[1] != 0x41 {
fmt.Printf("bad s[1], want 0x41 got %x\n", s[1])
}
}
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