github.com/mattn/go@v0.0.0-20171011075504-07f7db3ea99f/test/fixedbugs/bug200.go (about)

     1  // errorcheck
     2  
     3  // Copyright 2009 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  package main
     8  
     9  func main() {
    10  	// 6g used to compile these as two different
    11  	// hash codes so it missed the duplication
    12  	// and worse, compiled the wrong code
    13  	// for one of them.
    14  	var x interface{};
    15  	switch x.(type) {
    16  	case func(int):
    17  	case func(f int):	// ERROR "duplicate"
    18  	}
    19  }