mirror of
https://github.com/golang/go
synced 2024-11-05 18:36:08 +00:00
8003e79154
Some of these errors are reported in the wrong places. That’s issue #15911 and #15912. Change-Id: Ia09d7f89be4d15f05217a542a61b6ac08090dd87 Reviewed-on: https://go-review.googlesource.com/23588 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
81 lines
1.6 KiB
Go
81 lines
1.6 KiB
Go
// errorcheck
|
|
|
|
// Copyright 2016 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 switch statements with duplicate cases are detected by the compiler.
|
|
// Does not compile.
|
|
|
|
package main
|
|
|
|
import "fmt"
|
|
|
|
func f0(x int) {
|
|
switch x {
|
|
case 0:
|
|
case 0: // ERROR "duplicate case 0 in switch"
|
|
}
|
|
|
|
switch x {
|
|
case 0:
|
|
case int(0): // ERROR "duplicate case 0 in switch"
|
|
}
|
|
}
|
|
|
|
func f1(x float32) {
|
|
switch x {
|
|
case 5:
|
|
case 5: // ERROR "duplicate case 5 in switch"
|
|
case 5.0: // ERROR "duplicate case 5 in switch"
|
|
}
|
|
}
|
|
|
|
func f2(s string) {
|
|
switch s {
|
|
case "":
|
|
case "": // ERROR "duplicate case .. in switch"
|
|
case "abc":
|
|
case "abc": // ERROR "duplicate case .abc. in switch"
|
|
}
|
|
}
|
|
|
|
func f3(e interface{}) {
|
|
switch e {
|
|
case 0:
|
|
case 0: // ERROR "duplicate case 0 in switch"
|
|
case int64(0):
|
|
case float32(10):
|
|
case float32(10): // ERROR "duplicate case float32\(10\) in switch"
|
|
case float64(10):
|
|
case float64(10): // ERROR "duplicate case float64\(10\) in switch"
|
|
}
|
|
}
|
|
|
|
func f4(e interface{}) {
|
|
switch e.(type) {
|
|
case int:
|
|
case int: // ERROR "duplicate case int in type switch"
|
|
case int64:
|
|
case error: // ERROR "duplicate case error in type switch"
|
|
case error:
|
|
case fmt.Stringer:
|
|
case fmt.Stringer: // ERROR "duplicate case fmt.Stringer in type switch"
|
|
case struct {
|
|
i int "tag1"
|
|
}:
|
|
case struct {
|
|
i int "tag2"
|
|
}:
|
|
case struct {
|
|
i int "tag1"
|
|
}: // ERROR "duplicate case struct { i int .tag1. } in type switch"
|
|
}
|
|
}
|
|
|
|
func f5(a [1]int) {
|
|
switch a {
|
|
case [1]int{0}:
|
|
case [1]int{0}: // OK -- see issue 15896
|
|
}
|
|
}
|