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36 lines
781 B
36 lines
781 B
// errorcheck
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// Copyright 2016 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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// Verify that type switch statements with duplicate cases are detected
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// by the compiler.
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// Does not compile.
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package main
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import "fmt"
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func f4(e interface{}) {
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switch e.(type) {
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case int:
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case int: // ERROR "duplicate case int in type switch"
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case int64:
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case error:
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case error: // ERROR "duplicate case error in type switch"
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case fmt.Stringer:
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case fmt.Stringer: // ERROR "duplicate case fmt.Stringer in type switch"
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case struct {
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i int "tag1"
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}:
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case struct {
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i int "tag2"
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}:
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case struct { // ERROR "duplicate case struct { i int .tag1. } in type switch"
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i int "tag1"
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}:
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}
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}
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