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When resolving protocol composition types, using the old type checker to resolve the type manually instead of the iterative type checker submits a recursive-but- satisfiable request to the ITC. This way we directly resolve through TypeCheckType and can catch the circularity before it takes down the compiler.
11 lines
430 B
Swift
11 lines
430 B
Swift
// This source file is part of the Swift.org open source project
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// Copyright (c) 2014 - 2017 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: not %target-swift-frontend %s -emit-ir
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class A:a:a{}typealias a:A.a
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& Ms
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