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a457fa500d
This is a manual undo of CL 5674098. It does not implement the even less strict spec that we just agreed on, but it gets us back where we were at the last weekly. R=ken2 CC=golang-dev https://golang.org/cl/5683069
62 lines
1.1 KiB
Go
62 lines
1.1 KiB
Go
// errorcheck
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test that basic operations on named types are valid
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// and preserve the type.
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package main
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type Bool bool
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type Map map[int]int
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func (Map) M() {}
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type Slice []byte
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var slice Slice
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func asBool(Bool) {}
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func asString(String) {}
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type String string
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func main() {
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var (
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b Bool = true
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i, j int
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c = make(chan int)
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m = make(Map)
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)
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asBool(b)
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asBool(!b)
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asBool(true)
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asBool(*&b)
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asBool(Bool(true))
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asBool(1 != 2) // ERROR "cannot use.*type bool.*as type Bool"
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asBool(i < j) // ERROR "cannot use.*type bool.*as type Bool"
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_, b = m[2] // ERROR "cannot .* bool.*type Bool"
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var inter interface{}
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_, b = inter.(Map) // ERROR "cannot .* bool.*type Bool"
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_ = b
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var minter interface {
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M()
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}
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_, b = minter.(Map) // ERROR "cannot .* bool.*type Bool"
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_ = b
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_, bb := <-c
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asBool(bb) // ERROR "cannot use.*type bool.*as type Bool"
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_, b = <-c // ERROR "cannot .* bool.*type Bool"
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_ = b
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asString(String(slice)) // ok
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}
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