go issue25516 源码
golang issue25516 代码
文件路径：/test/fixedbugs/issue25516.go
// compile
// Copyright 2018 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.
// Make sure dead write barriers are handled correctly.
package main
func f(p **int) {
// The trick here is to eliminate the block containing the write barrier,
// but only after the write barrier branches are inserted.
// This requires some delicate code.
i := 0
var b []bool
var s string
for true {
if b[i] {
var a []string
s = a[len(s)]
i = 0
}
*p = nil
}
}
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