https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67066
--- Comment #8 from Eric Gallager <egall at gwmail dot gwu.edu> --- (In reply to Jonathan Wakely from comment #7) > Fixed on trunk. > > The filesystem library is now enabled on the gcc-5-branch too, but I'm not > making this change there. Just don't use --enable-concept-checks in > combination with the filesystem library (better yet, don't use > --enable-concept-checks at all). Thanks for the commit! One other place I'd document it, though, would be in libstdc++'s ./configure --help output, which currently just says: $ ./libstdc++-v3/configure --help | grep concept --enable-concept-checks use Boost-derived template checks [default=no] I would attach a patch for libstdc++-v3/acinclude.m4, but I don't know if I'll be able to stop myself from going and fixing all the under-quoted m4 macro arguments while I'm at it for this one...
