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	: 82.25.127.225 / nivaandassociates.com
	: Linux in-mum-web845.main-hosting.eu 4.18.0-553.40.1.lve.el8.x86_64 #1 SMP Wed Feb 12 18:54:57 UTC 2025 x86_64

: /opt/golang/1.17.2/test/

files >> //opt/golang/1.17.2/test/typeswitch2.go

 // 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.

// Verify that various erroneous type switches are caught by the compiler.
// Does not compile.

package main

import "io"

func whatis(x interface{}) string {
	switch x.(type) {
	case int:
		return "int"
	case int: // ERROR "duplicate"
		return "int8"
	case io.Reader:
		return "Reader1"
	case io.Reader: // ERROR "duplicate"
		return "Reader2"
	case interface {
		r()
		w()
	}:
		return "rw"
	case interface {	// ERROR "duplicate"
		w()
		r()
	}:
		return "wr"

	}
	return ""
}