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4ebac86895
If a sugared type desugars to a substitutable type, we would return the replacement type without the sugar. I think in practice this meant that ParenType would be lost sometimes. Preserving this correctly is required for an upcoming CSDiag change. Note that there's a minor source-breaking change with enum case constructors here. I've filed <rdar://problem/27261929> to track sorting it out in Swift 3 mode. Also an upcoming patch fixes another related issue and adds more tests for case constructors.
23 lines
767 B
Swift
23 lines
767 B
Swift
// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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// RUN: %target-swift-frontend %s -typecheck -verify
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// Issue found by https://github.com/austinzheng (Austin Zheng)
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enum A<T> {
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case Just(T)
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case Error
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}
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func foo() -> A<(String, String?)> {
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_ = A<(String, String?)>.Just("abc", "def") // expected-error{{extra argument in call}}
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_ = A.Just("abc", "def") // no error?
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return A.Just("abc", "def") // expected-error{{extra argument in call}}
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}
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