1
0
mirror of https://github.com/golang/go synced 2024-11-26 22:11:25 -07:00
go/test/fixedbugs/issue12413.go
acanino b60c8203ea cmd/compile: "invalid variable name x in type switch", where x is a name of a constant
Small fix: looks like a short variable declaration with a type switch
checks to make sure the variable used had valid shape (ONAME, OTYPE, or
ONONAME) and rejects everything else. Then a new variable is declared.
If the symbol contained in the declaration was a named OLITERAL (still a
valid identifier obviously) it would be rejected, even though a new
variable would have been declared.

Fix adds this case to the check.

Added a test case from issue12413.

Fixes #12413

Change-Id: I150dadafa8ee5612c867d58031027f2dca8c6ebc
Reviewed-on: https://go-review.googlesource.com/15760
Reviewed-by: Minux Ma <minux@golang.org>
Run-TryBot: Minux Ma <minux@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-10-21 04:21:16 +00:00

20 lines
460 B
Go

// compile
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// issue 12413: invalid variable name x in type switch: code would fail
// to compile if the variable used in the short variable declaration was
// previously declared as a constant.
package main
func main() {
const x = 42
switch x := interface{}(nil).(type) {
default:
_ = x
}
}