golang issue29362 代码
文件路径：/test/fixedbugs/issue29362.go
/ run
/ 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.
/ Verify that we don't consider a Go'd function's
/ arguments as pointers when they aren't.
package main
import (
"unsafe"
)
var badPtr uintptr
var sink []byte
func init() {
/ Allocate large enough to use largeAlloc.
b := make([]byte, 1<<16-1)
sink = b / force heap allocation
/ Any space between the object and the end of page is invalid to point to.
badPtr = uintptr(unsafe.Pointer(&b[len(b)-1])) + 1
}
var throttle = make(chan struct{}, 10)
func noPointerArgs(a, b, c, d uintptr) {
sink = make([]byte, 4096)
<-throttle
}
func main() {
const N = 1000
for i := 0; i < N; i++ {
throttle <- struct{}{}
go noPointerArgs(badPtr, badPtr, badPtr, badPtr)
sink = make([]byte, 4096)
}
}