https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64271
--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Kai-Uwe Eckhardt from comment #0) > Created attachment 34253 [details] > libstdc++-patch1 This introduces an ABI change. Also, if _CTYPE_BL represents the "blank" character class, I would expect it to be used for the ctype_base::blank mask defined at the end of the file. I only defined it as equal to ctype_base::space because as far as I could tell NetBSD didn't support a bitmask element for "blank". If that's changed in recent releases we should set ctype_base::blank properly. (In reply to Kai-Uwe Eckhardt from comment #1) > Created attachment 34254 [details] > libstdc++-patch2 (In reply to Kai-Uwe Eckhardt from comment #2) > Created attachment 34255 [details] > libstdc++-patch3 These two are OK.