test/ARCMT/no-canceling-bridge-to-bridge-cast.m

   1 // RUN: %clang_cc1 -arcmt-check -triple x86_64-apple-darwin10 -fsyntax-only -x objective-c -verify %s
   2 // rdar://10387088
   3 typedef const void * CFTypeRef;
   4 CFTypeRef CFBridgingRetain(id X);
   5 id CFBridgingRelease(CFTypeRef);
   6
   7 extern
   8 CFTypeRef CFRetain(CFTypeRef cf);
   9
  10 @interface INTF
  11 {
  12   void *cf_format;
  13   id objc_format;
  14 }
  15 @end
  16
  17 @interface NSString
  18 + (id)stringWithFormat:(NSString *)format;
  19 @end
  20
  21 @implementation INTF
  22 - (void) Meth {
  23   NSString *result;
  24
  25   result = (id) CFRetain([NSString stringWithFormat:@"PBXLoopMode"]); // expected-error {{cast of C pointer type 'CFTypeRef' (aka 'const void *') to Objective-C pointer type 'id' requires a bridged cast}} \
  26                                                                       // expected-note {{use __bridge to convert directly (no change in ownership)}} \
  27                                                                       // expected-note {{use CFBridgingRelease call to transfer ownership of a +1 'CFTypeRef' (aka 'const void *') into ARC}}
  28
  29   result = (id) CFRetain((id)((objc_format))); // expected-error {{cast of C pointer type 'CFTypeRef' (aka 'const void *') to Objective-C pointer type 'id' requires a bridged cast}} \
  30                                                // expected-note {{use __bridge to convert directly (no change in ownership)}} \
  31                                                // expected-note {{use CFBridgingRelease call to transfer ownership of a +1 'CFTypeRef' (aka 'const void *') into ARC}}
  32
  33   result = (id) CFRetain((id)((cf_format))); // expected-error {{cast of C pointer type 'CFTypeRef' (aka 'const void *') to Objective-C pointer type 'id' requires a bridged cast}} \
  34                                              // expected-note {{use __bridge to convert directly (no change in ownership)}} \
  35                                              // expected-note {{use CFBridgingRelease call to transfer ownership of a +1 'CFTypeRef' (aka 'const void *') into ARC}}
  36
  37   result = (id) CFRetain((CFTypeRef)((objc_format)));
  38
  39   result = (id) CFRetain(cf_format); // OK
  40 }
  41 @end
  42