Is there an __attribute __ alternative ((packaged) C ++ 11/14 alternative)

Question

C ++ 11 introduced the concept of a standardized attribute syntax. I could not find a list of all supported attributes. Is there an alternative to C ++ 11 for __attribute__((packed)) ?

eg.

 struct __attribute__((packed)) Pack { uint8_t field1; uint8_t field2; }; 

Answer 1

Unfortunately not. Attributes that currently define the standard:

• [[noreturn]] ;
• [[carries_dependency]] ;
• [[deprecated]] / [[deprecated(reason)]] ;

Everything else is determined by implementation.