vsnprintf_l
int vsnprintf_l(char * __restrict, size_t, locale_t,
return vsnprintf_l(str, n, _current_locale(), fmt, ap);
ret = vsnprintf_l(str, n, loc, fmt, ap);
__weak_alias(vsnprintf_l,_vsnprintf_l)
vsnprintf_l(char *str, size_t n, locale_t loc, const char *fmt, va_list ap)