title: set a breakpoint in malloc_error_break to debug
body: <p>For me here getting error :</p>
  
  <pre><code>[self.points addObject:@{@"latt": 
  [NSNumber numberWithFloat:(latitudeString.floatValue)],@"long": [NSNumber numberWithFloat:(longitudeString.floatValue]}];
  </code></pre>
  
  <p>Like this: malloc: <strong>* error for object 0x7f8480743a00: pointer being freed was not allocated
  *</strong> set a breakpoint in malloc_error_break to debug</p>
  
  <p>After adding malloc_error_break in Symbolic Breakpoint in Breakpoint Navigator getting same error</p>