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37f261010f
Update #40954 Change-Id: Ifaab7349631ccb12fc892882bbdf7f0ebf3d845f Reviewed-on: https://go-review.googlesource.com/c/go/+/251158 Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Trust: Keith Randall <khr@golang.org>
56 lines
1.1 KiB
Go
56 lines
1.1 KiB
Go
// errorcheck -+
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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 walk errors for go:notinheap.
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package p
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//go:notinheap
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type nih struct {
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next *nih
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}
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// Global variables are okay.
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var x nih
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// Stack variables are not okay.
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func f() {
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var y nih // ERROR "nih is incomplete \(or unallocatable\); stack allocation disallowed"
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x = y
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}
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// Heap allocation is not okay.
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var y *nih
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var y2 *struct{ x nih }
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var y3 *[1]nih
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var z []nih
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var w []nih
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var n int
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func g() {
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y = new(nih) // ERROR "can't be allocated in Go"
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y2 = new(struct{ x nih }) // ERROR "can't be allocated in Go"
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y3 = new([1]nih) // ERROR "can't be allocated in Go"
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z = make([]nih, 1) // ERROR "can't be allocated in Go"
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z = append(z, x) // ERROR "can't be allocated in Go"
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// Test for special case of OMAKESLICECOPY
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x := make([]nih, n) // ERROR "can't be allocated in Go"
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copy(x, z)
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z = x
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}
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// Writes don't produce write barriers.
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var p *nih
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//go:nowritebarrier
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func h() {
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y.next = p.next
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}
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