[Bug bootstrap/67546] bootstrap broken on x86_64-w64-mingw32, error: '::unsetenv' has not been declared in gcc.c

[ktietz at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67546

Kai Tietz <ktietz at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-09-11
                 CC|                            |ktietz at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Kai Tietz <ktietz at gcc dot gnu.org> ---
I added to mingw-w64's libwinpthread a work-a-round for this sloopy code in
libgomp.  Nevertheless issue should be fixed IMO in libgomp, too