[Bug preprocessor/30926] undef prepocessor directive ignored ?

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2007-02-22 17:29 -------
__signbit is not a macro so it cannot be undefined.

Also this is because "extern inline" changed meaning for -std=c99/-std=gnu99 to
be the C99 meaning instead of what GNU C decided it ment.

You need to use a newer version of glibc which has this fix in it.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30926