mirror of
https://github.com/golang/go
synced 2024-11-23 20:40:07 -07:00
fd178d6a7e
A new comment directive //go:noescape instructs the compiler that the following external (no body) func declaration should be treated as if none of its arguments escape to the heap. Fixes #4099. R=golang-dev, dave, minux.ma, daniel.morsing, remyoudompheng, adg, agl, iant CC=golang-dev https://golang.org/cl/7289048
27 lines
538 B
Go
27 lines
538 B
Go
// errorcheck -0 -m
|
|
|
|
// Copyright 2013 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.
|
|
|
|
// Check go:noescape annotations.
|
|
|
|
package p
|
|
|
|
// The noescape comment only applies to the next func,
|
|
// which must not have a body.
|
|
|
|
//go:noescape
|
|
|
|
func F1([]byte)
|
|
|
|
func F2([]byte)
|
|
|
|
func G() {
|
|
var buf1 [10]byte
|
|
F1(buf1[:]) // ERROR "buf1 does not escape"
|
|
|
|
var buf2 [10]byte // ERROR "moved to heap: buf2"
|
|
F2(buf2[:]) // ERROR "buf2 escapes to heap"
|
|
}
|