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[dev.typeparams] cmd/compile/internal/types2: report invalid ... in conversions
This fixes the bug below for types2. Updates #43124. Change-Id: Ic1962d41f321d8a08992d8529625bc133e526b0c Reviewed-on: https://go-review.googlesource.com/c/go/+/278012 Trust: Robert Griesemer <gri@golang.org> Run-TryBot: Robert Griesemer <gri@golang.org> Reviewed-by: Robert Findley <rfindley@google.com> TryBot-Result: Go Bot <gobot@golang.org>
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@ -128,6 +128,10 @@ func (check *Checker) call(x *operand, call *syntax.CallExpr) exprKind {
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break
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}
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}
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if call.HasDots {
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check.errorf(call.ArgList[0], "invalid use of ... in type conversion to %s)", T)
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break
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}
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check.conversion(x, T)
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}
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default:
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16
src/cmd/compile/internal/types2/fixedbugs/issue43124.src
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16
src/cmd/compile/internal/types2/fixedbugs/issue43124.src
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@ -0,0 +1,16 @@
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// Copyright 2020 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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var _ = int(0 /* ERROR invalid use of \.\.\. in type conversion */ ...)
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// test case from issue
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type M []string
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var (
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x = []string{"a", "b"}
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_ = M(x /* ERROR invalid use of \.\.\. in type conversion */ ...)
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)
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