Trouble with -pedantic and #include<cmath>, GCC or GLIBC bug?

[Volker Reichelt]

On 12 Aug, Tolga Dalman wrote:
> hi,
> 
> On Tue, 12 Aug 2003 17:32:24 +0200 (CEST) Volker Reichelt
> <reichelt@igpm.rwth-aachen.de> wrote:
> 
>> This is due to line 385 in GLIBC's mathinline.h:
>> 
>>   return __temp + __value ?: __x
>> 
>> I'm using glibc 2.2.5, but the line is still present in glibc 2.3.2.
>> 
>> Since omitting the middle term of a ?: expression is a gcc extension, it's
>> a GCC bug. But since the ISO standard forbids it, it's a GLIBC bug. :-(
> 
> apparantly, this has been fixed already: 
> 
> bits/mathinline.h: 383:
>   ...
>   __temp -= 1.0;                                  \
>   __temp += __value;                                  \
>   return __temp ? __temp : __x
>   ...
> i'm using gentoo linux / glibc 2.3.2

Maybe it's fixed in the gentoo distribution.
But it's still open in mainline glibc (I just checked the CVS).

But maybe the fix shown above will qualify as a patch. :-)

>> Should this be addressed (i.e. fixed) in GCC or in GLIBC?
> 
> i believe, this is a glibc issue.
> 
> brg, 
> Tolga Dalman

Regards,
Volker