Re: Warning using -Wconversion and -Ox in gcc 4.5 and 4.6 but not in previous releases

[Marc Glisse <marc dot glisse at inria dot fr>]

On Sun, 5 Jun 2011, José Luis García Pallero wrote:

> El día 5 de junio de 2011 16:17, Marc Glisse <marc.glisse@inria.fr> escribió:
> > On Sun, 5 Jun 2011, José Luis García Pallero wrote:
> >
> > > Hello,
> > > Three months ago I sent this mail to gcc-help:
> > >
> > > http://gcc.gnu.org/ml/gcc-help/2011-03/msg00064.html
> > >
> > > The behavior in gcc 4.6 release persists. I don't know if it is a bug
> > > exactly (in the original mail, some says that is a bug and some no).
> >
> > There is no shame in filing a bug report without being absolutely certain.
> >
> > In this case you could file one for gcc asking to improve the warning
> > (casting the constant 0 won't change its sign...), and one against glibc
> > asking that they explicitly cast 0 to size_t, after looking a bit if you can
> > find anything similar already reported. I am not saying either change will
> > happen, but it seems like a resonable strategy. And you may get interesting
> > comments on the bug reports.
>
> But the warning is about the strspn() function instead of return 0; sentence

Then file the bug reports saying only what you understand. (the warning is 
about code in bits/string2.h)

--
Marc Glisse