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https://github.com/golang/go
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58 lines
1.3 KiB
Go
58 lines
1.3 KiB
Go
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// errchk $G -e $D/$F.go
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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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func asBool(Bool) {}
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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 assign bool.*type Bool"
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m[2] = 1, b; // ERROR "cannot use.*type Bool.*as type bool"
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b = c<-1; // ERROR "cannot use.*type bool.*type Bool"
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_ = b;
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asBool(c<-1); // ERROR "cannot use.*type bool.*as type Bool"
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_, b = <-c; // ERROR "cannot assign bool.*type Bool"
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_ = b;
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var inter interface{};
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_, b = inter.(Map); // ERROR "cannot assign bool.*type Bool"
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_ = b;
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var minter interface{M()};
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_, b = minter.(Map); // ERROR "cannot assign bool.*type Bool"
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_ = b;
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asBool(closed(c)); // ERROR "cannot use.*type bool.*as type Bool"
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b = closed(c); // ERROR "cannot use.*type bool.*type Bool"
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_ = b;
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}
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