1*f4a2713aSLionel Sambuc// RUN: %clang_cc1 -fsyntax-only -verify -Wsign-conversion %s 2*f4a2713aSLionel Sambuc// rdar://13855394 3*f4a2713aSLionel Sambuc 4*f4a2713aSLionel Sambuctypedef unsigned int NSUInteger; 5*f4a2713aSLionel Sambuc 6*f4a2713aSLionel Sambuc@interface NSObject 7*f4a2713aSLionel Sambuc- new; 8*f4a2713aSLionel Sambuc- (NSUInteger)hash; 9*f4a2713aSLionel Sambuc@end 10*f4a2713aSLionel Sambuc 11*f4a2713aSLionel Sambuc@interface X : NSObject 12*f4a2713aSLionel Sambuc@property NSUInteger uint; 13*f4a2713aSLionel Sambuc@end 14*f4a2713aSLionel Sambuc 15*f4a2713aSLionel Sambuc@interface NSArray : NSObject 16*f4a2713aSLionel Sambuc 17*f4a2713aSLionel Sambuc- (NSUInteger)count; 18*f4a2713aSLionel Sambuc- (id)objectAtIndex:(NSUInteger)index; 19*f4a2713aSLionel Sambuc- (id)objectAtIndexedSubscript:(NSUInteger)index; 20*f4a2713aSLionel Sambuc 21*f4a2713aSLionel Sambuc@end 22*f4a2713aSLionel Sambuc 23*f4a2713aSLionel Sambucvoid foo() { 24*f4a2713aSLionel Sambuc X *x = [X new]; 25*f4a2713aSLionel Sambuc signed int sint = -1; 26*f4a2713aSLionel Sambuc [x setUint:sint]; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}} 27*f4a2713aSLionel Sambuc x.uint = sint; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}} 28*f4a2713aSLionel Sambuc} 29*f4a2713aSLionel Sambuc 30*f4a2713aSLionel Sambuc// rdar://13855682 31*f4a2713aSLionel Sambucvoid Test1() { 32*f4a2713aSLionel Sambucsigned int si = -1; 33*f4a2713aSLionel SambucNSArray *array; 34*f4a2713aSLionel Sambuc 35*f4a2713aSLionel Sambuc(void)((NSObject*)array[si]).hash; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}} 36*f4a2713aSLionel Sambuc 37*f4a2713aSLionel Sambuc(void)[((NSObject*)array[si]) hash]; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}} 38*f4a2713aSLionel Sambuc(void)array[si]; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}} 39*f4a2713aSLionel Sambuc} 40