go/test/fixedbugs/issue23311.dir/main.go

// 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.

package main

import _ "unsafe" // for linkname

//go:linkname f runtime.GC
func f()

func main() {
	f()
}
syscall: implement syscalls on Darwin using libSystem There are still some references to the bare Syscall functions in the stdlib. I will root those out in a following CL. (This CL is big enough as it is.) Most are in vendor directories: cmd/vendor/golang.org/x/sys/unix/ vendor/golang_org/x/net/route/syscall.go syscall/bpf_bsd.go syscall/exec_unix.go syscall/flock.go Update #17490 Change-Id: I69ab707811530c26b652b291cadee92f5bf5c1a4 Reviewed-on: https://go-review.googlesource.com/c/141639 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Elias Naur <elias.naur@gmail.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> 2018-09-24 08:13:36 -06:00			`// 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.`

cmd/compile: allow bodyless function if it is linkname'd In assembly free packages (aka "complete" or "pure go"), allow bodyless functions if they are linkname'd to something else. Presumably the thing the function is linkname'd to has a definition. If not, the linker will complain. And linkname is unsafe, so we expect users to know what they are doing. Note this handles only one direction, where the linkname directive is in the local package. If the linkname directive is in the remote package, this CL won't help. (See os/signal/sig.s for an example.) Fixes #23311 Change-Id: I824361b4b582ee05976d94812e5b0e8b0f7a18a6 Reviewed-on: https://go-review.googlesource.com/c/151318 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> 2018-11-26 11:48:56 -07:00			`package main`

			`import _ "unsafe" // for linkname`

			`//go:linkname f runtime.GC`
			`func f()`

			`func main() {`
			`f()`
			`}`