codekingpro/portable-devtools

1// run2 3// Copyright 2011 The Go Authors. All rights reserved.4// Use of this source code is governed by a BSD-style5// license that can be found in the LICENSE file.6 7// Test that dynamic interface checks treat byte=uint88// and rune=int or rune=int32.9 10package main11 12func main() {13	var x interface{}14 15	x = byte(1)16	switch x.(type) {17	case uint8:18		// ok19	default:20		panic("byte != uint8")21	}22 23	x = uint8(2)24	switch x.(type) {25	case byte:26		// ok27	default:28		panic("uint8 != byte")29	}30 31	rune32 := false32	x = rune(3)33	switch x.(type) {34	case int:35		// ok36	case int32:37		// must be new code38		rune32 = true39	default:40		panic("rune != int and rune != int32")41	}42 43	if rune32 {44		x = int32(4)45	} else {46		x = int(5)47	}48	switch x.(type) {49	case rune:50		// ok51	default:52		panic("int (or int32) != rune")53	}54}55