AnalysisTool (http://www.karppinen.fi/analysistool/) which in turn uses the llvm static analyzer generates warnings for mogenerated code. ex:

• (BOOL)primitiveIsLeafValue {
  NSNumber *result = [self primitiveIsLeaf];
  return result ? [result boolValue] : 0;
  }

It warns "coercion from 'int' to 'BOOL' may alter its value". Of course, there isn't really anything wrong with the code above, but the warning could be easily silenced by changing that 0 to a NO. That would fix it because the definition of NO includes a cast to BOOL.

This warning is useful in other situations but all these false positives are generating a lot of noise.