vasprintf_l
int vasprintf_l(char ** __restrict, locale_t, const char * __restrict,
ret = vasprintf_l(str, loc, fmt, ap);
__weak_alias(vasprintf_l, _vasprintf_l)
vasprintf_l(char **str, locale_t loc, const char *fmt, va_list ap)
return vasprintf_l(str, _current_locale(), fmt, ap);