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// 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] // ERROR "cannot .* bool.*type Bool"
var inter interface{}
_, b = inter.(Map) // ERROR "cannot .* bool.*type Bool"
_ = b
var minter interface {
M()
}
_, b = minter.(Map) // ERROR "cannot .* bool.*type Bool"
_ = b
_, bb := <-c
asBool(bb) // ERROR "cannot use.*type bool.*as type Bool"
_, b = <-c // ERROR "cannot .* bool.*type Bool"
_ = b
asString(String(slice)) // ok
}
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