1 // RUN: %clang_cc1 -fsyntax-only -verify -Wsign-conversion %s 2 // rdar://13855394 3 4 typedef unsigned int NSUInteger; 5 6 @interface NSObject 7 - new; 8 - (NSUInteger)hash; 9 @end 10 11 @interface X : NSObject 12 @property NSUInteger uint; 13 @end 14 15 @interface NSArray : NSObject 16 17 - (NSUInteger)count; 18 - (id)objectAtIndex:(NSUInteger)index; 19 - (id)objectAtIndexedSubscript:(NSUInteger)index; 20 21 @end 22 23 void foo() { 24 X *x = [X new]; 25 signed int sint = -1; 26 [x setUint:sint]; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}} 27 x.uint = sint; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}} 28 } 29 30 // rdar://13855682 31 void Test1() { 32 signed int si = -1; 33 NSArray *array; 34 35 (void)((NSObject*)array[si]).hash; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}} 36 37 (void)[((NSObject*)array[si]) hash]; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}} 38 (void)array[si]; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}} 39 } 40
