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[Test] Add test case for now-fixed rdar://problem/39805133 #19827

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Merged
merged 1 commit into from
Oct 11, 2018
Merged

[Test] Add test case for now-fixed rdar://problem/39805133 #19827

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1 change: 1 addition & 0 deletions test/multifile/Inputs/protocol-conformance-rdar39805133-other.swift
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@@ -0,0 +1 @@
protocol DefaultInit { init() }
29 changes: 29 additions & 0 deletions test/multifile/protocol-conformance-rdar39805133.swift
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// RUN: %target-swift-frontend -emit-ir -o - -primary-file %s %S/Inputs/protocol-conformance-rdar39805133-other.swift -module-name foo
// RUN: %target-swift-frontend -emit-ir -o - %s -primary-file %S/Inputs/protocol-conformance-rdar39805133-other.swift -module-name foo

protocol _Int : DefaultInit {
associatedtype Minus1 : _Int
associatedtype Plus1 : _Int = Inc<Self>
static var value: Int { get }
}

struct Inc<T : _Int> : _Int {
typealias Minus1 = T
static var value: Int { return T.value + 1 }
}

extension _Int {
var plus1: Plus1 { return Plus1() }
var minus1: Minus1 { return Minus1() }
}

struct _0_ : _Int {
typealias Minus1 = _0_//Underflow
static let value = 0
}

let _0 = _0_()
protocol AtLeast0 : _Int {}
extension _0_ : AtLeast0 {}
protocol AtLeast1 : AtLeast0 {}
extension Inc : AtLeast1, AtLeast0 where T == _0_ {}