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// run
// Copyright 2020 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.
// This test makes sure unsafe-uintptr arguments are handled correctly.
package main
import (
"runtime"
"unsafe"
)
var done = make(chan bool, 1)
func setup() unsafe.Pointer {
s := "ok"
runtime.SetFinalizer(&s, func(p *string) { *p = "FAIL" })
return unsafe.Pointer(&s)
}
//go:noinline
//go:uintptrescapes
func test(s string, p, q uintptr, rest ...uintptr) int {
runtime.GC()
runtime.GC()
if *(*string)(unsafe.Pointer(p)) != "ok" {
panic(s + ": p failed")
}
if *(*string)(unsafe.Pointer(q)) != "ok" {
panic(s + ": q failed")
}
for _, r := range rest {
if *(*string)(unsafe.Pointer(r)) != "ok" {
panic(s + ": r[i] failed")
}
}
done <- true
return 0
}
//go:noinline
func f() int {
return test("return", uintptr(setup()), uintptr(setup()), uintptr(setup()), uintptr(setup()))
}
type S struct{}
//go:noinline
//go:uintptrescapes
func (S) test(s string, p, q uintptr, rest ...uintptr) int {
return test(s, p, q, rest...)
}
func main() {
test("normal", uintptr(setup()), uintptr(setup()), uintptr(setup()), uintptr(setup()))
<-done
go test("go", uintptr(setup()), uintptr(setup()), uintptr(setup()), uintptr(setup()))
<-done
func() {
defer test("defer", uintptr(setup()), uintptr(setup()), uintptr(setup()), uintptr(setup()))
}()
<-done
func() {
for {
defer test("defer in for loop", uintptr(setup()), uintptr(setup()), uintptr(setup()), uintptr(setup()))
break
}
}()
<-done
func() {
s := &S{}
defer s.test("method call", uintptr(setup()), uintptr(setup()), uintptr(setup()), uintptr(setup()))
}()
<-done
func() {
s := &S{}
for {
defer s.test("defer method loop", uintptr(setup()), uintptr(setup()), uintptr(setup()), uintptr(setup()))
break
}
}()
<-done
f()
<-done
}