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This CL changes escape analysis to skip reporting diagnostics (at least for parameter tagging) for generated wrappers. We're inconsistent about when/where wrappers are generated, which made errorcheck tests of escape analysis unnecessarily brittle to changes in wrapper generation. This CL addresses this making errorcheck tests only care about tagging of the actual functions themselves, not the wrappers too. Change-Id: Ia1a0b9dabee4d4162b05647f871db03b032c945a Reviewed-on: https://go-review.googlesource.com/c/go/+/330689 Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
66 lines
2.2 KiB
Go
66 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$"
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}
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func TestF2() {
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var v int // ERROR "moved to heap"
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F2(0, 1, uintptr(unsafe.Pointer(&v)), 2) // ERROR "live at call to newobject: .?autotmp" "live at call to F2: .?autotmp" "escapes to heap" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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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: .?autotmp" "live at call to F4: .?autotmp" "escapes to heap" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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func TestM2() {
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var t T
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var v int // ERROR "moved to heap"
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t.M2(0, 1, uintptr(unsafe.Pointer(&v)), 2) // ERROR "live at call to newobject: .?autotmp" "live at call to T.M2: .?autotmp" "escapes to heap" "stack object .autotmp_[0-9]+ unsafe.Pointer$"
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}
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