[Bug target/51007] Quadmath I/O doesn't work on MinGW

[fxcoudert at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51007

Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch
                 CC|                            |jakub at redhat dot com

--- Comment #6 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> 2011-11-07 12:42:26 UTC ---
(In reply to comment #4)
> So  the mixture of different sized types in union is leading to this behavior.
> You can see that result becomes ok, if you are specifying to union/struct the
> attribute gcc_struct.

Indeed, I confirm that your patch fixes the issue (and the original Fortran
testcase reported on comp.lang.fortran now works fine). Both Tobias and Jakub
(Cc'ed) are libquadmath maintainers and can approve it.