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

[Marc Glisse]

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