1
0
mirror of https://github.com/golang/go synced 2024-11-20 05:24:41 -07:00
go/test/switch3.go
Luuk van Dijk 13e92e4d75 gc: Better typechecks and errors in switches.
Allow any type in switch on interface value.
Statically check typeswitch early.

Fixes #2423.
Fixes #2424.

R=rsc, dsymonds
CC=golang-dev
https://golang.org/cl/5339045
2011-11-09 10:58:53 +01:00

39 lines
506 B
Go

// errchk $G -e $D/$F.go
// Copyright 2011 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.
package main
type I interface {
M()
}
func bad() {
var i I
var s string
switch i {
case s: // ERROR "mismatched types string and I"
}
switch s {
case i: // ERROR "mismatched types I and string"
}
}
func good() {
var i interface{}
var s string
switch i {
case s:
}
switch s {
case i:
}
}