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The alias doesn't need to be marked go:notinheap. It gets its notinheap-ness from the target type. Without this change, the type alias test in the notinheap.go file generates these two errors: notinheap.go:62: misplaced compiler directive notinheap.go:63: type nih must be go:notinheap The first is a result of go:notinheap pragmas not applying to type alias declarations. The second is the result of then trying to match the notinheap-ness of the alias and the target type. Add a few more go:notinheap tests while we are here. Update #40954 Change-Id: I067ec47698df6e9e593e080d67796fd05a1d480f Reviewed-on: https://go-review.googlesource.com/c/go/+/250939 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com> 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 go:notinheap; 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 "heap allocation disallowed"
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y2 = new(struct{ x nih }) // ERROR "heap allocation disallowed"
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y3 = new([1]nih) // ERROR "heap allocation disallowed"
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z = make([]nih, 1) // ERROR "heap allocation disallowed"
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z = append(z, x) // ERROR "heap allocation disallowed"
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// Test for special case of OMAKESLICECOPY
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x := make([]nih, n) // ERROR "heap allocation disallowed"
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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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