Re: g++ 2.95.2 calculates wrong size for class

["Martin v. Loewis" <martin at loewis dot home dot cs dot tu-berlin dot de>]

>     Here is the code fragment.  Moving enum PACKETtypes into the class
> causes the sizeof(basePacket) to return 12 instead of 8

Thanks for your bug report. Unfortunately, I cannot reproduce it: I
always get a size of 12, regardless whether the enum in the class or
not. Size 12 is also the correct size: 4 bytes for header and pad,
each, plus four bytes for the virtual method table.

If you need a structure to exactly match the layout of C, it must not
have virtual methods, base classes, access declarations
(private/protected), and some other stuff.

Regards,
Martin