Class Object layout in memory

["Joe Lovelace" <pintose at hotmail dot com>]

How does the GNU compiler (2.96 or 3.3 or PPC) layout instances of C++ class 
objects in memory? For example,
> class CMyClass{
private:
> int a;
> char b;
> short c:
> };
>
> CMyClass instance;
>
> if &instance is 0x1000, would the memory layout be as follows? Or is it 
> more complex? (Of course the items may be aligned to the processors 
> alignment boundaries ie 32-bit)
>
> instance a b c
> 0x1000 0x1000 0x1004 0x1005
>
>
> Joe Lovelace
> Winnipeg MB, Canada