50 lines
1.7 KiB
Objective-C
50 lines
1.7 KiB
Objective-C
// RUN: %clang_cc1 -fsyntax-only -verify %s
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typedef unsigned int size_t;
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@protocol P @end
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@interface NSMutableArray
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- (id)objectAtIndexedSubscript:(size_t)index;
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- (void)setObject:(id)object atIndexedSubscript:(size_t)index;
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@end
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@interface NSMutableDictionary
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- (id)objectForKeyedSubscript:(id)key;
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- (void)setObject:(id)object forKeyedSubscript:(size_t)key;
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@end
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id func() {
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NSMutableArray *array;
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float f;
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array[f] = array; // expected-error {{indexing expression is invalid because subscript type 'float' is not an integral or Objective-C pointer type}}
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return array[3.14]; // expected-error {{indexing expression is invalid because subscript type 'double' is not an integral or Objective-C pointer type}}
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}
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void test_unused() {
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NSMutableArray *array;
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array[10]; // expected-warning {{container access result unused - container access should not be used for side effects}}
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NSMutableDictionary *dict;
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dict[array]; // expected-warning {{container access result unused - container access should not be used for side effects}}
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}
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void testQualifiedId(id<P> qualifiedId) {
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id object = qualifiedId[10]; // expected-error {{expected method to read array element not found on object of type 'id<P>'}}
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qualifiedId[10] = qualifiedId; // expected-error {{expected method to write array element not found on object of type 'id<P>'}}
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}
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void testUnqualifiedId(id unqualId) {
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id object = unqualId[10];
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unqualId[10] = object;
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}
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@protocol Subscriptable
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- (id)objectAtIndexedSubscript:(size_t)index;
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- (void)setObject:(id)object atIndexedSubscript:(size_t)index;
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@end
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void testValidQualifiedId(id<Subscriptable> qualifiedId) {
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id object = qualifiedId[10];
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qualifiedId[10] = object;
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}
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