go issue8155 源码
golang issue8155 代码
文件路径：/test/fixedbugs/issue8155.go
// run
// Copyright 2014 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 8155.
// Alignment of stack prologue zeroing was wrong on 64-bit Native Client
// (because of 32-bit pointers).
package main
import "runtime"
func bad(b bool) uintptr {
var p **int
var x1 uintptr
x1 = 1
if b {
var x [11]*int
p = &x[0]
}
if b {
var x [1]*int
p = &x[0]
}
runtime.GC()
if p != nil {
x1 = uintptr(**p)
}
return x1
}
func poison() uintptr {
runtime.GC()
var x [20]uintptr
var s uintptr
for i := range x {
x[i] = uintptr(i+1)
s += x[i]
}
return s
}
func main() {
poison()
bad(false)
}
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