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c5e07f5c11
The Objective-C common-type computation had a few problems that required a significant rework, including: - Quadradic behavior when finding the common base type; now it's linear. - Keeping around type arguments when computing the common type between a specialized and an unspecialized type - Introducing redundant protocol qualifiers. Part of rdar://problem/6294649. Also fixes rdar://problem/19572837 by addressing a longstanding bug in ASTContext::CollectInheritedProtocols(). llvm-svn: 241544
56 lines
929 B
Objective-C
56 lines
929 B
Objective-C
// RUN: %clang_cc1 -fsyntax-only -verify %s
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// radar 7638810
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@protocol NSObject @end
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@interface NSObject <NSObject> @end
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@interface UIResponder : NSObject
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@end
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@implementation UIResponder
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@end
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@interface UIView : UIResponder
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@end
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@implementation UIView
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@end
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@interface UIWebTiledView : UIView
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@end
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@implementation UIWebTiledView
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@end
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@interface UIWebDocumentView : UIWebTiledView
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@end
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@implementation UIWebDocumentView
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@end
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@interface UIWebBrowserView : UIWebDocumentView
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@end
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@implementation UIWebBrowserView
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@end
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@interface UIPDFView : UIView
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@end
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@implementation UIPDFView
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@end
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@interface UIWebPDFView : UIPDFView
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@end
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@implementation UIWebPDFView
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@end
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UIWebPDFView *getView()
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{
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UIWebBrowserView *browserView;
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UIWebPDFView *pdfView;
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return pdfView ? pdfView : browserView; // expected-warning {{incompatible pointer types returning 'UIView *' from a function with result type 'UIWebPDFView *'}}
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}
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