Bug#503202: libc6-dev: math_errhandling isn't defined anywhere

[Matthew Vernon <m.c.vernon@warwick.ac.uk>]

Aurelien Jarno wrote:
> reassign 503202 gcc-4.3
> thanks
>
> Matthew Vernon a écrit :
> > Package: libc6-dev
> > Version: 2.3.6.ds1-13etch7
> > Severity: important
> >
> > Hi,
> >
> > math.h has the following in it:
> > /* Bitmasks for the math_errhandling macro.  */
> > # define MATH_ERRNO     1       /* errno set by math functions.  */
> > # define MATH_ERREXCEPT 2       /* Exceptions raised by math functions.  
> > */
> >
> > but no-where is math_errhandling actually defined! This breaks code 
> > wanting to check how domain errors in floating-point code are handled 
> > (amongst other things). Section 7.12.9 of C99 discusses MATH_ERRNO, 
> > MATH_ERREXCEPT, and math_errhandling.
> >
> > SuSv3 also requires math_errhandling to be present:
> > http://www.opengroup.org/onlinepubs/009695399/basedefs/math.h.html
>
> This is actually a compiler problem. See the footnotes on
> http://gcc.gnu.org/c99status.html . Reassigning the bug accordingly.

gcc on Mac OS X gets this right (the libc there defines 
math_errhandling), which is why I suspected glibc to be the problem. I 
infer from that, that glibc could fix this without needing changes to gcc?

Matthew