this->__format_int(__fmt+1, __len, false, __iob.flags());

    this->__format_int(__fmt+1, __len, false, __iob.flags());

    const unsigned __nbuf = (numeric_limits<unsigned long long>::digits / 3)

    const unsigned __nbuf = (numeric_limits<unsigned long long>::digits / 3)

                          + ((numeric_limits<unsigned long long>::digits % 3) != 0)

                          + ((numeric_limits<unsigned long long>::digits % 3) != 0)

    char __nar[__nbuf];

    char __nar[__nbuf];

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

    int __nc = snprintf_l(__nar, sizeof(__nar), _LIBCPP_GET_C_LOCALE, __fmt, __v);

    int __nc = snprintf_l(__nar, sizeof(__nar), _LIBCPP_GET_C_LOCALE, __fmt, __v);