[Bug c++/58815] Casting/Conversion operator for std::decimal not supported

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58815

--- Comment #13 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Thus, let's make a decision: either this is a bug, importance <minor> as
submitted, about conversions to integer, as appeared to be, or it's a catch all
bug about all the issues with the TR decimal + all the work toward a C++17
standard facility.