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254c497e5c
This CL addresses the 2nd part of the issue below. - For types2, now use the same error messages as the compiler in this case. - Make the mechanism for reporting clarifying error messages handle the case where we don't have additional position information. - Provide context information (type assertion vs type switch). Fixes #49005. Change-Id: I4eeaf4f0c3f2f8735b63993778f58d713fef21ee Reviewed-on: https://go-review.googlesource.com/c/go/+/356512 Trust: Robert Griesemer <gri@golang.org> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Robert Findley <rfindley@google.com>
16 lines
361 B
Go
16 lines
361 B
Go
// errorcheck
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// Copyright 2021 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 p
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type T interface{ M() }
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func F() T
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var _ = F().(*X) // ERROR "impossible type assertion:( F\(\).\(\*X\))?\n\t\*X does not implement T \(missing M method\)"
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type X struct{}
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