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8b58b0dbb4
Redeclaration checking was validating all declarations with the same base name as the given declaration (and in the same general nominal type), even when it was trivial to determine that the declarations could not be conflicting. Separate out the easy structural checks (based on kind, full name, instance vs. non-instance member, etc.) and perform those first, before validation. Fixes SR-6558, a case where redeclaration checking caused some unnecessary recursion in the type checker.
29 lines
864 B
Swift
29 lines
864 B
Swift
// RUN: %target-swift-frontend %s -emit-ir -o /dev/null
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protocol VectorIndex {
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associatedtype Vector8 : Vector where Vector8.Index == Self, Vector8.Element == UInt8
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}
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enum VectorIndex1 : VectorIndex {
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case i0
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typealias Vector8 = Vector1<UInt8>
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}
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protocol Vector {
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associatedtype Index: VectorIndex
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associatedtype Element
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init(elementForIndex: (Index) -> Element)
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subscript(index: Index) -> Element { get set }
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}
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struct Vector1<Element> : Vector {
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//typealias Index = VectorIndex1 // Uncomment this line to workaround bug.
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var e0: Element
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init(elementForIndex: (VectorIndex1) -> Element) {
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e0 = elementForIndex(.i0)
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}
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subscript(index: Index) -> Element {
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get { return e0 }
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set { e0 = newValue }
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}
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}
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extension Vector where Index == VectorIndex1 {
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init(_ e0: Element) { fatalError() }
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}
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