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b2fd76ab8d
Most of the test cases in the test directory use the new go:build syntax already. Convert the rest. In general, try to place the build constraint line below the test directive comment in more places. For #41184. For #60268. Change-Id: I11c41a0642a8a26dc2eda1406da908645bbc005b Cq-Include-Trybots: luci.golang.try:gotip-linux-386-longtest,gotip-linux-amd64-longtest,gotip-windows-amd64-longtest Reviewed-on: https://go-review.googlesource.com/c/go/+/536236 Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
64 lines
2.0 KiB
Go
64 lines
2.0 KiB
Go
// errorcheck -0 -m -live -std
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//go:build !windows && !js && !wasip1
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test escape analysis and liveness inferred for uintptrkeepalive functions.
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//
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// This behavior is enabled automatically for function declarations with no
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// bodies (assembly, linkname), as well as explicitly on complete functions
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// with //go:uintptrkeepalive.
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//
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// This is most important for syscall.Syscall (and similar functions), so we
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// test it explicitly.
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package p
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import (
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"syscall"
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"unsafe"
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)
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func implicit(uintptr) // ERROR "assuming ~p0 is unsafe uintptr"
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//go:uintptrkeepalive
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//go:nosplit
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func explicit(uintptr) {
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}
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func autotmpImplicit() { // ERROR "can inline autotmpImplicit"
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var t int
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implicit(uintptr(unsafe.Pointer(&t))) // ERROR "live at call to implicit: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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func autotmpExplicit() { // ERROR "can inline autotmpExplicit"
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var t int
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explicit(uintptr(unsafe.Pointer(&t))) // ERROR "live at call to explicit: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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func autotmpSyscall() { // ERROR "can inline autotmpSyscall"
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var v int
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syscall.Syscall(0, 1, uintptr(unsafe.Pointer(&v)), 2) // ERROR "live at call to Syscall: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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func localImplicit() { // ERROR "can inline localImplicit"
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var t int
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p := unsafe.Pointer(&t)
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implicit(uintptr(p)) // ERROR "live at call to implicit: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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func localExplicit() { // ERROR "can inline localExplicit"
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var t int
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p := unsafe.Pointer(&t)
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explicit(uintptr(p)) // ERROR "live at call to explicit: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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func localSyscall() { // ERROR "can inline localSyscall"
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var v int
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p := unsafe.Pointer(&v)
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syscall.Syscall(0, 1, uintptr(p), 2) // ERROR "live at call to Syscall: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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