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When bindings are picked for particular type variable, right-hand side of the binding might be another type variable wrapped into optional type, when trying to determine if both sides of the binding have the same l-valueness it's imperative to look throught optional type of the right-hand side. Otherwise new binding might be effectively unsolvable. Resolves: rdar://problem/37291371
11 lines
410 B
Swift
11 lines
410 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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nil?as?Int??
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