http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47380
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-01-20 20:12:55 UTC --- (In reply to comment #4) > (In reply to comment #1) > > Yes it is, and no, we are not going to "fix" the legacy simulated concepts, > > we > > are barely keeping the code, for now. > > Ok. If it is a "legacy", would you mind saying so in the documentation? I read > http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt03ch08.html (concept > checking) and the formulation about the "new" implementation is very positive > and doesn't reflect at all this legacy status. You didn't think the reference to a first version in 1999 might have been a hint those docs were written a long time ago :) I'm updating them now