mirror of
https://github.com/golang/go
synced 2024-11-02 13:21:55 +00:00
d18e9407b0
There's several copies of this function. We only need one. While here, normalize so that we always declare parameters, and always use the names ~pNN for params and ~rNN for results. Change-Id: I49e90d3fd1820f3c07936227ed5cfefd75d49a1c Reviewed-on: https://go-review.googlesource.com/c/go/+/528415 Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> Auto-Submit: Matthew Dempsky <mdempsky@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Than McIntosh <thanm@google.com>
64 lines
2.1 KiB
Go
64 lines
2.1 KiB
Go
// errorcheck -0 -m -live -std
|
|
|
|
//go:build !windows && !js && !wasip1
|
|
// +build !windows,!js,!wasip1
|
|
|
|
// Copyright 2015 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.
|
|
|
|
// Test escape analysis and liveness inferred for uintptrkeepalive functions.
|
|
//
|
|
// This behavior is enabled automatically for function declarations with no
|
|
// bodies (assembly, linkname), as well as explicitly on complete functions
|
|
// with //go:uintptrkeepalive.
|
|
//
|
|
// This is most important for syscall.Syscall (and similar functions), so we
|
|
// test it explicitly.
|
|
|
|
package p
|
|
|
|
import (
|
|
"syscall"
|
|
"unsafe"
|
|
)
|
|
|
|
func implicit(uintptr) // ERROR "assuming ~p0 is unsafe uintptr"
|
|
|
|
//go:uintptrkeepalive
|
|
//go:nosplit
|
|
func explicit(uintptr) {
|
|
}
|
|
|
|
func autotmpImplicit() { // ERROR "can inline autotmpImplicit"
|
|
var t int
|
|
implicit(uintptr(unsafe.Pointer(&t))) // ERROR "live at call to implicit: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
|
|
}
|
|
|
|
func autotmpExplicit() { // ERROR "can inline autotmpExplicit"
|
|
var t int
|
|
explicit(uintptr(unsafe.Pointer(&t))) // ERROR "live at call to explicit: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
|
|
}
|
|
|
|
func autotmpSyscall() { // ERROR "can inline autotmpSyscall"
|
|
var v int
|
|
syscall.Syscall(0, 1, uintptr(unsafe.Pointer(&v)), 2) // ERROR "live at call to Syscall: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
|
|
}
|
|
|
|
func localImplicit() { // ERROR "can inline localImplicit"
|
|
var t int
|
|
p := unsafe.Pointer(&t)
|
|
implicit(uintptr(p)) // ERROR "live at call to implicit: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
|
|
}
|
|
|
|
func localExplicit() { // ERROR "can inline localExplicit"
|
|
var t int
|
|
p := unsafe.Pointer(&t)
|
|
explicit(uintptr(p)) // ERROR "live at call to explicit: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
|
|
}
|
|
|
|
func localSyscall() { // ERROR "can inline localSyscall"
|
|
var v int
|
|
p := unsafe.Pointer(&v)
|
|
syscall.Syscall(0, 1, uintptr(p), 2) // ERROR "live at call to Syscall: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
|
|
}
|