File: 0100-issue-46878.swift

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// RUN: not %target-swift-frontend -emit-ir -primary-file %s

// https://github.com/apple/swift/issues/46878

internal protocol _UTFEncoding {
    associatedtype EncodedScalar where EncodedScalar == Int
}

public protocol _UnicodeEncoding {
    associatedtype EncodedScalar : BidirectionalCollection
}

public protocol _UnicodeEncoding_ {
    associatedtype ForwardParser: _UnicodeEncoding
}

public protocol UnicodeEncoding: _UnicodeEncoding_ where ForwardParser == Self {}

public protocol _UTFParser {
    associatedtype Encoding: UnicodeEncoding, _UTFEncoding
}