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97b06445e3
This "fixes" two issues: - The name of a non-public typealias would leak into the public interface if the extension had any public members. - A common pattern of defining a platform-specific typealias for an imported class and then extending that type would lead to circularity when trying to deserialize the typealias. We /shouldn't/ be loading the extension at that point, but fixing that would be much harder. The "right" answer is to (a) check that the typealias is public if the extension has any public members, and (b) somehow ensure there is no circularity issue (either by not importing the extension as a result of importing the typealias, or by the extension being able to set its sugared base type later). rdar://problem/29694978
29 lines
1.3 KiB
Swift
29 lines
1.3 KiB
Swift
// RUN: rm -rf %t && mkdir -p %t
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// RUN: %target-build-swift %s -import-objc-header %S/Inputs/rdar29694978.h -emit-module -o %t/Library.swiftmodule
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// RUN: %target-swift-ide-test -print-module -module-to-print=Library -source-filename=x -I %S/Inputs/ -I %t | %FileCheck %s
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// REQUIRES: objc_interop
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// This would be wonderful to fold into a larger test, but I'm worried that
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// trying to do so would perturb the original conditions that cause it to
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// crash: deserializing a typealias (1) to an imported Objective-C type (2)
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// that has a protocol (3) that refines another protocol (4) which causes us
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// to load all extensions, including one defined in this file (5) in terms of
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// the original typealias (1).
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//
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// It's probably best to just leave this test about that.
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import Foundation
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// CHECK-DAG: typealias MyNonGenericType = NonGenericType
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typealias MyNonGenericType = NonGenericType
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// CHECK-DAG: extension NonGenericType
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extension MyNonGenericType {}
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// CHECK-DAG: typealias MyGenericType<T> = GenericType<T>
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typealias MyGenericType<T: NSObject> = GenericType<T>
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// CHECK-DAG: extension GenericType where Element : AnyObject
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extension MyGenericType {}
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// CHECK-DAG: extension GenericType where Element == NSObject
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extension MyGenericType where Element == NSObject {}
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