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https://github.com/golang/go
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ca634fa2c5
After running the types2 type checker, walk info.Instances to reject any not-in-heap type arguments. This is feasible to check using the types2 API now, thanks to #46731. Fixes #54765. Change-Id: Idd2acc124d102d5a76f128f13c21a6e593b6790b Reviewed-on: https://go-review.googlesource.com/c/go/+/427235 Reviewed-by: Keith Randall <khr@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org> Auto-Submit: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Keith Randall <khr@google.com>
29 lines
743 B
Go
29 lines
743 B
Go
// errorcheck
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// Copyright 2022 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 that not-in-heap types cannot be used as type
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// arguments. (pointer-to-nih types are okay though.)
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//go:build cgo
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// +build cgo
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package p
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import (
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"runtime/cgo"
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"sync/atomic"
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)
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var _ atomic.Pointer[cgo.Incomplete] // ERROR "cannot use incomplete \(or unallocatable\) type as a type argument: runtime/cgo\.Incomplete"
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var _ atomic.Pointer[*cgo.Incomplete] // ok
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func implicit(ptr *cgo.Incomplete) {
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g(ptr) // ERROR "cannot use incomplete \(or unallocatable\) type as a type argument: runtime/cgo\.Incomplete"
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g(&ptr) // ok
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}
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func g[T any](_ *T) {}
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