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4496a03a56
Otherwise with the new resilient witness table emission pattern, we might miss conformances for refined protocols, since the witness table itself is never referenced, only the conformance descriptor is. Fixes <rdar://problem/46133018>.
42 lines
870 B
Swift
42 lines
870 B
Swift
// RUN: %target-swift-frontend -parse-as-library -O %s -emit-ir | %FileCheck %s
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// CHECK: @"$s17lazy_conformances12MyCollectionVyxGSKAASKRzrlMc" = hidden constant {
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// CHECK: @"$s17lazy_conformances12MyCollectionVyxGSTAAMc" = hidden constant {
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struct MyCollection<Base : Collection> : Collection {
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typealias Index = Base.Index
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typealias Element = Base.Element
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var startIndex: Index {
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fatalError()
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}
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var endIndex: Index {
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fatalError()
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}
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func index(after i: Index) -> Index {
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fatalError()
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}
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func formIndex(after i: inout Index) {
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fatalError()
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}
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subscript(position: Index) -> Element {
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fatalError()
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}
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}
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extension MyCollection : BidirectionalCollection
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where Base : BidirectionalCollection
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{
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func index(before i: Index) -> Index {
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fatalError()
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}
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func formIndex(before i: inout Index) {
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fatalError()
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}
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}
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