1*67e74705SXin Li// RUN: %clang_cc1 -fsyntax-only -verify %s 2*67e74705SXin Li 3*67e74705SXin Litypedef unsigned int size_t; 4*67e74705SXin Li@protocol P @end 5*67e74705SXin Li 6*67e74705SXin Li@interface NSMutableArray 7*67e74705SXin Li- (id)objectAtIndexedSubscript:(size_t)index; 8*67e74705SXin Li- (void)setObject:(id)object atIndexedSubscript:(size_t)index; 9*67e74705SXin Li@end 10*67e74705SXin Li 11*67e74705SXin Li@interface NSMutableDictionary 12*67e74705SXin Li- (id)objectForKeyedSubscript:(id)key; 13*67e74705SXin Li- (void)setObject:(id)object forKeyedSubscript:(size_t)key; 14*67e74705SXin Li@end 15*67e74705SXin Li 16*67e74705SXin Liid func() { 17*67e74705SXin Li NSMutableArray *array; 18*67e74705SXin Li float f; 19*67e74705SXin Li array[f] = array; // expected-error {{indexing expression is invalid because subscript type 'float' is not an integral or Objective-C pointer type}} 20*67e74705SXin Li return array[3.14]; // expected-error {{indexing expression is invalid because subscript type 'double' is not an integral or Objective-C pointer type}} 21*67e74705SXin Li} 22*67e74705SXin Li 23*67e74705SXin Livoid test_unused() { 24*67e74705SXin Li NSMutableArray *array; 25*67e74705SXin Li array[10]; // expected-warning {{container access result unused - container access should not be used for side effects}} 26*67e74705SXin Li 27*67e74705SXin Li NSMutableDictionary *dict; 28*67e74705SXin Li dict[array]; // expected-warning {{container access result unused - container access should not be used for side effects}} 29*67e74705SXin Li} 30*67e74705SXin Li 31