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