https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66438
--- Comment #9 from James Y Knight <foom at fuhm dot net> --- What good is having special code to allow linking compatibility, if the program then can't work anyways? Isn't that anti-useful? > I didn't realise you were the maintainer and knew what's supposed to work. No, of course...I'm only a user.... > If you can provide a patch I'm not certain, but it seems like probably the old-ABI error_category::default_error_condition(int) ought to just return an error_condition also with the old ABI, instead of the new one? CC'ing debian's gcc maintainer, because the stated lack of desire for compatibility between libstdc++ version 5, and g++ 4.9 seems like it's probably something he wasn't aware of when upgrading.
