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Re: possible bug in g++
On 16 February 2012 09:53, Mattia Jona-Lasinio wrote:
> Hmmm, I see the problem. I just find very confusing that the
> compilation of wrong code be compiler dependent or version dependent.
> Wouldn't it be better to mark it as invalid code and to signal it?
That's not generally possible. The compiler cannot tell that you're
going to get a linker error later. When compiling a file it's possible
that the missing definition will be present in some other file and
provided at link time. That's why the standard says "no diagnostic
required".
> Maybe one could allow the compiler to accept the code with a
> -fpermissive flag. Anyway, thanks a lot!
No, it's better for people to just learn the simple rule that a static
const member that is initialized in-class also needs an out-of-class
definition.