[cfe-dev] Objective-C++11 literal types

[Richard Smith]

Hi,

I was surprised to find this in AST::Type::isLiteralType:

  // Objective-C lifetime types are not literal types.
  if (BaseTy->isObjCRetainableType())
    return false;

This is strange, because we do support constant expression evaluation of
Objective-C lifetime types (outside C++11).

So which is correct? Should lifetime types be permitted as literal types, or
should they not be permitted as the type of globals in (Objective-)C? Or is
there some reason why C++11 should treat them differently from other
languages?

Thanks,
Richard