[Bug libstdc++/69767] Clash with macros from sys/sysmacros.h

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69767

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-02-11
     Ever confirmed|0                           |1

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Glibc includes sys/sysmacros.h conditionally based on:

#ifdef  __USE_MISC

which is unfortunately always true for C++, because we define _GNU_SOURCE
unconditionally (so this is a variation on PR 11196).

I want to be able to stop defining that, probably for gcc7, but it's a big job.