mirror of
https://github.com/golang/go
synced 2024-07-19 19:44:12 +00:00
449b6abbac
"declared and not used" is technically correct, but might confuse the user. Switching "and" to "but" will hopefully create the contrast for the users: they did one thing (declaration), but not the other --- actually using the variable. This new message is still not ideal (specifically, declared is not entirely precise here), but at least it matches the other parsers and is one step in the right direction. Change-Id: I725c7c663535f9ab9725c4b0bf35b4fa74b0eb20 Reviewed-on: https://go-review.googlesource.com/c/go/+/203282 Run-TryBot: Minux Ma <minux@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
21 lines
598 B
Go
21 lines
598 B
Go
// errorcheck
|
|
|
|
// Copyright 2019 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.
|
|
|
|
// Verify that various erroneous type switches are caught by the compiler.
|
|
// Does not compile.
|
|
|
|
package main
|
|
|
|
func notused(x interface{}) {
|
|
// The first t is in a different scope than the 2nd t; it cannot
|
|
// be accessed (=> declared but not used error); but it is legal
|
|
// to declare it.
|
|
switch t := 0; t := x.(type) { // ERROR "declared but not used"
|
|
case int:
|
|
_ = t // this is using the t of "t := x.(type)"
|
|
}
|
|
}
|