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6019a52d4d
- detect *interface case and report specific error - replaced switch with sequence of if's for more clarity - fixed isInterfacePtr: it applies to all interfaces, incl. type parameters - reviewed/fixed all uses of isInterfacePtr - adjusted error messages to be consistently of the format "type %s is pointer to interface, not interface" Fixes #48312. Change-Id: Ic3c8cfcf93ad57ecdb60f6a727cce9e1aa4afb5d Reviewed-on: https://go-review.googlesource.com/c/go/+/376914 Trust: Robert Griesemer <gri@golang.org> Reviewed-by: Robert Findley <rfindley@google.com>
41 lines
1.2 KiB
Go
41 lines
1.2 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|invalid receiver"
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func (p *P1) val() int { return 1 } // ERROR "receiver.* pointer|invalid pointer or interface receiver|invalid 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|type \*Val is pointer to interface, not interface"
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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|cannot call pointer method"
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