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Diffstat (limited to '')
-rw-r--r-- | test/named1.go | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/test/named1.go b/test/named1.go new file mode 100644 index 0000000..7feae13 --- /dev/null +++ b/test/named1.go @@ -0,0 +1,62 @@ +// 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" + _, b = <-c // ok now + _ = b + + asString(String(slice)) // ok +} |