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

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