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assign.go:59:28: error: ‘x’ repeated on left side of := assign.go:65:20: error: ‘a’ repeated on left side of := method2.go:36:11: error: reference to method ‘val’ in type that is pointer to interface, not interface method2.go:37:11: error: reference to method ‘val’ in type that is pointer to interface, not interface Change-Id: I8f385c75a82fae4eacf4618df8f9f65932826494 Reviewed-on: https://go-review.googlesource.com/c/go/+/274447 Trust: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Than McIntosh <thanm@google.com>
42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
// errorcheck
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// Copyright 2009 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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// Verify that pointers and interface types cannot be method receivers.
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// Does not compile.
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package main
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type T struct {
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a int
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}
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type P *T
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type P1 *T
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func (p P) val() int { return 1 } // ERROR "receiver.* pointer|invalid pointer or interface receiver"
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func (p *P1) val() int { return 1 } // ERROR "receiver.* pointer|invalid pointer or interface receiver"
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type I interface{}
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type I1 interface{}
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func (p I) val() int { return 1 } // ERROR "receiver.*interface|invalid pointer or interface receiver"
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func (p *I1) val() int { return 1 } // ERROR "receiver.*interface|invalid pointer or interface receiver"
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type Val interface {
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val() int
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}
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var _ = (*Val).val // ERROR "method"
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var v Val
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var pv = &v
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var _ = pv.val() // ERROR "undefined|pointer to interface"
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var _ = pv.val // ERROR "undefined|pointer to interface"
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func (t *T) g() int { return t.a }
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var _ = (T).g() // ERROR "needs pointer receiver|undefined|method requires pointer"
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