Suppose that I have a declaration: struct __attribute__((__packed__)) foo { char ch; int number; }; Will be any variable of this type be packed? The real world thing is: I have a code that come up from 8bit world, with a lot of lots of chained structures that are transferred throght some radio frequence module, I need be sure that all this structs have no padding so that they can be transferred as they are to radio. To achieve this I've putted __attribute__((__packed__)) to every struct and inner struct that are sended through RF, but I read at some StackOverflow post that packed attribute aplies to variables not to types, so I came here ask to experts. Is that true? At gcc manual I found Type Attributes and Variable attributes, so I'm assuming both exists how differentiate from one to another? Regards, -- "Do or do not. There is no try" Yoda Master -- To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html