1 // RUN: %clang_cc1 -arcmt-check -verify -triple x86_64-apple-darwin10 %s 2 3 #include "Common.h" 4 5 typedef const struct __CFString * CFStringRef; 6 typedef const void * CFTypeRef; 7 CFTypeRef CFBridgingRetain(id X); 8 id CFBridgingRelease(CFTypeRef); 9 10 struct StrS { 11 CFStringRef sref_member; 12 }; 13 14 @interface NSString : NSObject { 15 CFStringRef sref; 16 struct StrS *strS; 17 } 18 -(id)string; 19 -(id)newString; 20 @end 21 22 @implementation NSString 23 -(id)string { 24 if (0) 25 return sref; 26 else 27 return strS->sref_member; 28 } 29 -(id)newString { 30 return sref; // expected-error {{implicit conversion of C pointer type 'CFStringRef' (aka 'const struct __CFString *') to Objective-C pointer type 'id' requires a bridged cast}} \ 31 // expected-note{{use __bridge to convert directly (no change in ownership)}} \ 32 // expected-note{{use CFBridgingRelease call to transfer ownership of a +1 'CFStringRef' (aka 'const struct __CFString *') into ARC}} 33 } 34 @end 35 36 void f(BOOL b) { 37 CFStringRef cfstr; 38 NSString *str = (NSString *)cfstr; // expected-error {{cast of C pointer type 'CFStringRef' (aka 'const struct __CFString *') to Objective-C pointer type 'NSString *' requires a bridged cast}} \ 39 // expected-note{{use __bridge to convert directly (no change in ownership)}} \ 40 // expected-note{{use CFBridgingRelease call to transfer ownership of a +1 'CFStringRef' (aka 'const struct __CFString *') into ARC}} 41 void *vp = str; // expected-error {{requires a bridged cast}} expected-note {{use CFBridgingRetain call}} expected-note {{use __bridge}} 42 } 43 44 void f2(NSString *s) { 45 CFStringRef ref; 46 ref = [(CFStringRef)[s string] retain]; // expected-error {{cast of Objective-C pointer type 'id' to C pointer type 'CFStringRef' (aka 'const struct __CFString *') requires a bridged cast}} \ 47 // expected-error {{bad receiver type 'CFStringRef' (aka 'const struct __CFString *')}} \ 48 // expected-note{{use __bridge to convert directly (no change in ownership)}} \ 49 // expected-note{{use CFBridgingRetain call to make an ARC object available as a +1 'CFStringRef' (aka 'const struct __CFString *')}} 50 } 51 52 CFStringRef f3() { 53 return (CFStringRef)[[[NSString alloc] init] autorelease]; // expected-error {{it is not safe to cast to 'CFStringRef' the result of 'autorelease' message; a __bridge cast may result in a pointer to a destroyed object and a __bridge_retained may leak the object}} \ 54 // expected-note {{remove the cast and change return type of function to 'NSString *' to have the object automatically autoreleased}} 55 } 56 57 extern void NSLog(NSString *format, ...); 58 59 // rdar://13192395 60 void f4(NSString *s) { 61 NSLog(@"%@", (CFStringRef)s); // expected-error {{cast of Objective-C pointer type 'NSString *' to C pointer type 'CFStringRef' (aka 'const struct __CFString *') requires a bridged cast}} \ 62 // expected-note{{use __bridge to convert directly (no change in ownership)}} \ 63 // expected-note{{use CFBridgingRetain call to make an ARC object available as a +1 'CFStringRef' (aka 'const struct __CFString *')}} 64 } 65
