Roland Mainz wrote:
>Ian Collins wrote:
>
>
>>>Does anyone know whether it is possible to use C99 features in a shared
>>>library which is used by older applications ?
>>>
>>>For example would it be possible to use C99 features such as |int
>>>getrpcbynumber(int arg1, /* ... */) { char buff[arg1]; /* ... */ }| in a
>>>library such as libnsl (without breaking backwards-compatibillity) ?
>>>
>>>
>>>
>>It shouldn't matter as long as you don't add any C99 features to a
>>public interface.
>>
>>
>
>Erm... just to get a clarification: I can use C99 features in the
>library code itself without running into trouble (the example above uses
>|getrpcbynumber()| which is a "public" interface...
>
>
>
You are changing the implementation, not the interface. Just make sure
your changes link cleanly.
>>You could even use C++, provided no one knows :)
>>
>>
>
>That will likely require the C++ runtime (libCrun) ...
>
>
Not if you're careful with what you use. I put together a driver shell
in C++ a while back, you just have to avoid anything that requires
runtime support.
Ian
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