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This crash happens because shouldAddSelfFixit (a check for the expected_self_before_reference diagnotic) performs name lookup inside the parser, which causes a search for extensions, which triggers the mangler, which can get confused if we are in an unfinished declaration (a PatternBindingInitilizer in this case). A cleaner fix would be to move that logic inside Sema, but it would require much more refactoring that I don’t feel comfortable doing. Instead, this band-aid checks if the innermost type is inside a local context. If that’s the case, we can ignore the search for extensions.
10 lines
446 B
Swift
10 lines
446 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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protocol A{var f={struct ManagedBuffer{var f=(t:f
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