Re: [avr-gcc-list] Problems with abstract classes / pure virtual functions:

[Joerg Wunsch]

"E. Weddington" <address@hidden> wrote:

>> warning: alignment of 'concrete_class::_ZTV14concrete_class' is 
>> greater than maximum object file alignment. Using 1
>> warning: alignment of 'abstract_base::_ZTV13abstract_base' is greater 
>> than maximum object file alignment. Using 1

No idea about this one.

>> And the Linker finally generates an error: ....h:8: undefined
>> reference to `__cxa_pure_virtual' ( which is actually the line
>> marked by *)

> In general, there's not a lot of people who are using C++ on the AVR
> on this list, though there might be some....

The second mentioned problem is one of the known issues.  A
enthusiastic developer still needs to be found and recruited who's
willing to port libsupc++ to the AVR.  `Late binding' won't work
without libsupc++ support.

-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)