https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81122
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Ben Woodard from comment #5) > The example code in: http://en.cppreference.com/w/cpp/io/manip/fixed > suggests that this should work. Probably either the behavior or the library > or the example on cppreference should change. The standard does not permit the example to read the hex float, because 'P' is not one of the characters that std::num_get::do_get will accumulate. Implementations which parse that hex float are non-conforming. Again, see comment 1.
