title: Pointer casting with ARC
body: <p>ARC is giving me a hard time with following cast:</p>
  
  <pre><code>NSDictionary *attributes;
  SecItemCopyMatching((__bridge CFDictionaryRef)keychainItemQuery, (CFTypeRef *)&amp;attributes);
  </code></pre>
  
  <p>Error: Cast of an indirect pointer to an Objective-C pointer to 'CFTypeRef <em>' (aka 'const void *</em>') is disallowed with ARC</p>