Justin Johansson <[email protected]> wrote:
If I recall correctly, doubles require 8-byte alignment. So you object
therefore must require 8-byte alignment.
Instances of my Foo class require 17 bytes so therefore all objects
require 17 byte alignment. But for my Bar class it's 42.
???
If a member of your class requires n-byte alignment, your class will
require (k*n)-byte alignment (where k is a positive integer), to ensure
the member has its required alignment.
Example: doubles require 8-byte alignment. You create
class foo { double bar; }. If your foo is offset by 2 bytes from an
8-byte border, so is bar, and thus its alignment is broken.
--
Simen
