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ced715cb46
The fixits call back into the type checker via typeCheckCheckedCast(), which sets up a new constraint system. As a result we would hit assertions by introducing type variables from a previous "generation". It seems that if we bail out of this code path altogether, we get a better diagnostic -- in the provided test, it complains about an ambiguous member to '.value', rather than not being able to convert _? to V?. Fixes <https://bugs.swift.org/browse/SR-2592>.
10 lines
410 B
Swift
10 lines
410 B
Swift
// This source file is part of the Swift.org open source project
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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 http://swift.org/LICENSE.txt for license information
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// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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// RUN: not %target-swift-frontend %s -parse
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assert((n:String{
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