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cmd/compile: suppress duplicate type errors
If we've already complained about a type T, don't complain again about further expressions involving it. Fixes #20245 and hopefully all of its ilk. Change-Id: Ic0abe8235d52e8a7ac40e3615aea8f3a54fd7cec Reviewed-on: https://go-review.googlesource.com/42690 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org>
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Original file line number | Diff line number | Diff line change |
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@@ -15,7 +15,7 @@ type I interface { | |
} | ||
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func n() { | ||
(I) // ERROR "type I is not an expression" | ||
(I) | ||
} | ||
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func m() { | ||
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,11 @@ | ||
// errorcheck | ||
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// Copyright 2017 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. | ||
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// Issue 20245: panic while formatting an error message | ||
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package p | ||
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var e = interface{ I1 } // ERROR "undefined: I1" |