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b2c397e537
Unlikely to happen in practice, but easy enough to prevent and might as well do so for completeness. Fixes #28243. Change-Id: I848c3af49cb923f088e9490c6a79373e182fad08 Reviewed-on: https://go-review.googlesource.com/c/142719 Run-TryBot: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Austin Clements <austin@google.com>
64 lines
1.4 KiB
Go
64 lines
1.4 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 type-checking 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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// Types embedding notinheap types must be notinheap.
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type embed1 struct { // ERROR "must be go:notinheap"
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x nih
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}
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type embed2 [1]nih // ERROR "must be go:notinheap"
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type embed3 struct { // ERROR "must be go:notinheap"
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x [1]nih
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}
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type embed4 map[nih]int // ERROR "go:notinheap map key not allowed"
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type embed5 map[int]nih // ERROR "go:notinheap map value not allowed"
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type emebd6 chan nih // ERROR "chan of go:notinheap type not allowed"
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type okay1 *nih
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type okay2 []nih
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type okay3 func(x nih) nih
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type okay4 interface {
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f(x nih) nih
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}
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// Type conversions don't let you sneak past notinheap.
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type t1 struct{ x int }
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//go:notinheap
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type t2 t1
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//go:notinheap
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type t3 byte
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//go:notinheap
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type t4 rune
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var sink interface{}
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func i() {
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sink = new(t1) // no error
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sink = (*t2)(new(t1)) // ERROR "cannot convert(.|\n)*t2 is go:notinheap"
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sink = (*t2)(new(struct{ x int })) // ERROR "cannot convert(.|\n)*t2 is go:notinheap"
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sink = []t3("foo") // ERROR "cannot convert(.|\n)*t3 is go:notinheap"
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sink = []t4("bar") // ERROR "cannot convert(.|\n)*t4 is go:notinheap"
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}
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