mirror of
https://github.com/golang/go
synced 2024-11-15 00:20:30 -07:00
02820d61a9
Change-Id: I103e3eeacd5b11efd63c965482a626878ba5ac81 Reviewed-on: https://go-review.googlesource.com/c/go/+/275216 Trust: Robert Griesemer <gri@golang.org> Run-TryBot: Robert Griesemer <gri@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Robert Findley <rfindley@google.com>
63 lines
984 B
Go
63 lines
984 B
Go
// errorcheck
|
|
|
|
// Copyright 2009 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.
|
|
|
|
// Test that basic operations on named types are valid
|
|
// and preserve the type.
|
|
// Does not compile.
|
|
|
|
package main
|
|
|
|
type Bool bool
|
|
|
|
type Map map[int]int
|
|
|
|
func (Map) M() {}
|
|
|
|
type Slice []byte
|
|
|
|
var slice Slice
|
|
|
|
func asBool(Bool) {}
|
|
func asString(String) {}
|
|
|
|
type String string
|
|
|
|
func main() {
|
|
var (
|
|
b Bool = true
|
|
i, j int
|
|
c = make(chan int)
|
|
m = make(Map)
|
|
)
|
|
|
|
asBool(b)
|
|
asBool(!b)
|
|
asBool(true)
|
|
asBool(*&b)
|
|
asBool(Bool(true))
|
|
asBool(1 != 2) // ok now
|
|
asBool(i < j) // ok now
|
|
|
|
_, b = m[2] // ok now
|
|
|
|
var inter interface{}
|
|
_, b = inter.(Map) // ok now
|
|
_ = b
|
|
|
|
var minter interface {
|
|
M()
|
|
}
|
|
_, b = minter.(Map) // ok now
|
|
_ = b
|
|
|
|
_, bb := <-c
|
|
asBool(bb) // ERROR "cannot use.*type bool.*as type Bool|cannot use bb"
|
|
_, b = <-c // ok now
|
|
_ = b
|
|
|
|
asString(String(slice)) // ok
|
|
}
|