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Re: gcc-in-cxx update
On Wed, 29 Apr 2009, Manuel López-Ibáñez wrote:
> 2009/4/29 Joseph S. Myers <joseph@codesourcery.com>:
> > On Wed, 29 Apr 2009, Manuel López-Ibáñez wrote:
> >
> >> >> BTW, why is this warned about?
> >> >
> >> > I imagine because in C it is not conventional to use "extern" when
> >> > defining something, only on a declaration that is not a definition.
> >>
> >> But may it lead to some confusion or subtle error? It seems overly
> >> pedantic to me if it is just a matter of style, because ?extern is
> >> implicit if missing,
> >
> > "int i;" is not the same as "extern int i;".
>
> Sorry for my ignorance but I have been reading and searching for the
> answer and I cannot tell what is the difference between "int i = 1"
> and "extern int i = 1" at file-scope in C.
I did not say those were different, I said the uninitialized case was
different, so "extern is implicit if missing" is not a general C rule.
--
Joseph S. Myers
joseph@codesourcery.com