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https://github.com/golang/go
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25 lines
664 B
Go
25 lines
664 B
Go
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// errorcheck
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// Copyright 2018 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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package main
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type Stringer interface {
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String() string
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}
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func main() {
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var e interface{}
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switch e := e.(type) {
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case G: // ERROR "undefined: G"
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e.M() // ok: this error should be ignored because the case failed its typecheck
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case E: // ERROR "undefined: E"
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e.D() // ok: this error should be ignored because the case failed its typecheck
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case Stringer:
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// ok: this error should not be ignored to prove that passing legs aren't left out
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_ = e.(T) // ERROR "undefined: T"
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}
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}
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