mirror of
https://github.com/golang/go
synced 2024-11-13 19:30:22 -07:00
cf20525bf4
Fixes #15911. Change-Id: I500533484de61aa09abe4cecb010445e3176324e Reviewed-on: https://go-review.googlesource.com/26760 TryBot-Result: Gobot Gobot <gobot@golang.org> Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
33 lines
895 B
Go
33 lines
895 B
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.
|
|
|
|
// Check the compiler's switch handling that happens
|
|
// at typechecking time.
|
|
// This must be separate from other checks,
|
|
// because errors during typechecking
|
|
// prevent other errors from being discovered.
|
|
|
|
package main
|
|
|
|
// Verify that type switch statements with impossible cases are detected by the compiler.
|
|
func f0(e error) {
|
|
switch e.(type) {
|
|
case int: // ERROR "impossible type switch case: e \(type error\) cannot have dynamic type int \(missing Error method\)"
|
|
}
|
|
}
|
|
|
|
// Verify that the compiler rejects multiple default cases.
|
|
func f1(e interface{}) {
|
|
switch e {
|
|
default:
|
|
default: // ERROR "multiple defaults in switch"
|
|
}
|
|
switch e.(type) {
|
|
default:
|
|
default: // ERROR "multiple defaults in switch"
|
|
}
|
|
}
|