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66e13bcc85
Remove function-to-function type match score increase, which should only happen contextually in presence of other restrictions, this used to fix the case related to matching of arrays of functions with and w/e `throws` as function parameters which used to be ambigious, and now handled by collection-upcast conversion score. Resolves: rdar://problem/35142121
45 lines
845 B
Swift
45 lines
845 B
Swift
// RUN: %target-typecheck-verify-swift -swift-version 3
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// RUN: %target-typecheck-verify-swift -swift-version 4
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// rdar://problem/31969605
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class Base {}
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class Derived : Base {}
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protocol Refined {}
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protocol Proto : Refined {}
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extension Base : Refined {}
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func baseFn(_: Base) {}
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func superclassConversion(fn: @escaping (Base) -> ()) {
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let _: (Derived) -> () = fn
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}
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func existentialConversion(fn: @escaping (Refined) -> ()) {
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let _: (Proto) -> () = fn
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let _: (Base) -> () = fn
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let _: (Derived) -> () = fn
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}
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// rdar://problem/31725325
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func a<b>(_: [(String, (b) -> () -> Void)]) {}
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func a<b>(_: [(String, (b) -> () throws -> Void)]) {}
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class c {
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func e() {}
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static var d = [("", e)]
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}
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a(c.d)
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func b<T>(_: (T) -> () -> ()) {}
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b(c.e)
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func bar(_: () -> ()) {}
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func bar(_: () throws -> ()) {}
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func bar_empty() {}
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bar(bar_empty)
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