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813a066f16
Introduce context-sensitive, non-underscored nullability specifiers (nonnull, nullable, null_unspecified) for Objective-C method return types, method parameter types, and properties. Introduce Objective-C-specific semantics, including computation of the nullability of the result of a message send, merging of nullability information from the @interface of a class into its @implementation, etc . This is the Objective-C part of rdar://problem/18868820. llvm-svn: 240154
16 lines
687 B
Objective-C
16 lines
687 B
Objective-C
// RUN: %clang_cc1 -fobjc-arc -fobjc-runtime-has-weak -Wnonnull %s -verify
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//rdar://19211059
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@interface NSObject @end
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@interface Base : NSObject
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- (nonnull id)bad:(nullable id)obj; // expected-note 2 {{previous declaration is here}}
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- (nullable id)notAsBad:(nonnull id)obj;
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@end
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@interface Sub : Base
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- (nullable id)bad:(nonnull id)obj; // expected-warning {{conflicting nullability specifier on return types, 'nullable' conflicts with existing specifier 'nonnull'}} \
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// expected-warning {{conflicting nullability specifier on parameter types, 'nonnull' conflicts with existing specifier 'nullable'}}
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- (nonnull id)notAsBad:(nullable id)obj;
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@end
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