gcc-you can use this code to learn something about gcc, and inquire further into linux,

				// Build don't link:								struct IsCompressed { };				struct Field {				};								template				inline bool				for_each(const Field& p, IsCompressed, C)				{				  return p.IsCompressed(); // ERROR - calling type like a method				}								template bool for_each(const Field& p, IsCompressed, int);