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22 lines
660 B
Swift
22 lines
660 B
Swift
// RUN: %target-typecheck-verify-swift
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// rdar://problem/29954938 -- A bug in associated type inference exposed an
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// order dependency where, if a type conformed to Collection in one extension
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// then conformed to MutableCollection in a later extension, it would fail
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// to type-check.
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struct Butz<Flubz: Comparable> { }
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extension Butz: Collection {
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public var startIndex: Flubz { fatalError() }
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public var endIndex: Flubz { fatalError() }
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}
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extension Butz: MutableCollection {
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public subscript (_ position: Flubz) -> Flubz {
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get { fatalError() }
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set { }
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}
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public func index(after i: Flubz) -> Flubz { fatalError() }
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}
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