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7ebb96a489
The following code:
func n() {(interface{int})}
generates:
3: interface contains embedded non-interface int
3: type %!v(PANIC=runtime error: invalid memory address or nil pointer dereference) is not an expression
It is because the corresponding symbol (Sym field in Type object)
is nil, resulting in a panic in typefmt.
Just skip the symbol if it is nil, so that the error message becomes:
3: interface contains embedded non-interface int
3: type interface { int } is not an expression
Fixes #11614
Change-Id: I219ae7eb01edca264fad1d4a1bd261d026294b00
Reviewed-on: https://go-review.googlesource.com/14015
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
27 lines
619 B
Go
27 lines
619 B
Go
// errorcheck
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// Copyright 2015 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 incorrect expressions involving wrong anonymous interface
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// do not generate panics in Type Stringer.
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// Does not compile.
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package main
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type I interface {
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int // ERROR "interface contains embedded non-interface int"
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}
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func n() {
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(I) // ERROR "type I is not an expression"
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}
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func m() {
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(interface{int}) // ERROR "interface contains embedded non-interface int" "type interface { int } is not an expression"
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}
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func main() {
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}
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