[Bug libstdc++/56677] [ratio] : ratio_multiply, ratio_divide, etc results doesnt verify as __is_ratio

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56677



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



           What    |Removed                     |Added

----------------------------------------------------------------------------

           Keywords|                            |rejects-valid

      Known to work|                            |4.8.0



--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2013-03-21 
13:44:21 UTC ---

The workaround is simply:



std::chrono::duration<unsigned long, ratii1::type > d1;



I don't think we want to backport the fix, as it would break compatibility with

existing 4.7.x releases.