Hi Paul, > See glibc bug 19932: > https://sourceware.org/bugzilla/show_bug.cgi?id=19932
Thanks for mentioning this. It's a hairy issue to change the behaviour of something as basic as the C locale, 15 years after glibc is in wide use. > +# if C_LOCALE_MAYBE_EILSEQ > + if ((size_t) -2 <= ret && n != 0 && ! hard_locale (LC_CTYPE)) The function hard_locale is quite slow, as it calls setlocale(), strdup(), and similar functions. rpl_mbrtowc is supposed to be fast, as it's called once on every character in a string. Can't you get away without the call to hard_locale? Bruno
