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Cq-Include-Trybots: luci.golang.try:gotip-linux-386-nosizespecializedmalloc,gotip-linux-amd64-nosizespecializedmalloc,gotip-linux-arm64-nosizespecializedmalloc Change-Id: I6a6a696465004b939c989afc058c4c3e1fb7134f Reviewed-on: https://go-review.googlesource.com/c/go/+/720401 Auto-Submit: Michael Matloob <matloob@golang.org> Reviewed-by: Michael Knyszek <mknyszek@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Michael Matloob <matloob@google.com>
65 lines
2.2 KiB
Go
65 lines
2.2 KiB
Go
// errorcheck -0 -l -m -live
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// Copyright 2016 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 uintptrescapes functions.
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package p
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import (
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"unsafe"
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)
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//go:uintptrescapes
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func F1(a uintptr) {} // ERROR "escaping uintptr"
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//go:uintptrescapes
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func F2(a ...uintptr) {} // ERROR "escaping ...uintptr"
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//go:uintptrescapes
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func F3(uintptr) {} // ERROR "escaping uintptr"
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//go:uintptrescapes
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func F4(...uintptr) {} // ERROR "escaping ...uintptr"
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type T struct{}
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//go:uintptrescapes
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func (T) M1(a uintptr) {} // ERROR "escaping uintptr"
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//go:uintptrescapes
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func (T) M2(a ...uintptr) {} // ERROR "escaping ...uintptr"
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func TestF1() {
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var t int // ERROR "moved to heap"
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F1(uintptr(unsafe.Pointer(&t))) // ERROR "live at call to F1: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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func TestF3() {
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var t2 int // ERROR "moved to heap"
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F3(uintptr(unsafe.Pointer(&t2))) // ERROR "live at call to F3: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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func TestM1() {
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var t T
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var v int // ERROR "moved to heap"
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t.M1(uintptr(unsafe.Pointer(&v))) // ERROR "live at call to T.M1: .?autotmp" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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func TestF2() {
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var v int // ERROR "moved to heap"
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F2(0, 1, uintptr(unsafe.Pointer(&v)), 2) // ERROR "live at call to (newobject|mallocgcSmallNoScanSC[0-9]+): .?autotmp" "live at call to F2: .?autotmp" "escapes to heap" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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func TestF4() {
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var v2 int // ERROR "moved to heap"
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F4(0, 1, uintptr(unsafe.Pointer(&v2)), 2) // ERROR "live at call to (newobject|mallocgcSmallNoScanSC[0-9]+): .?autotmp" "live at call to F4: .?autotmp" "escapes to heap" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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func TestM2() {
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var t T
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var v int // ERROR "moved to heap"
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t.M2(0, 1, uintptr(unsafe.Pointer(&v)), 2) // ERROR "live at call to (newobject|mallocgcSmallNoScanSC[0-9]+): .?autotmp" "live at call to T.M2: .?autotmp" "escapes to heap" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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