<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=http://email.email.llvm.org/c/eJytVE1zmzAQ_TXisoMHS4DNgYNjp7dOO53-AYHWhlogRh9OnF_fFbYTN5npoSkjCe1K-_RW-6Ax6lz_QDPh2I8HYFzkRbHOGN-CdOA7hMmaRuMAT2SPxoMz-oSKiQ3Ldiy7jp33k4s-_oXawajGaL8w9kDWC3XRoVqdvp--3gexMru0lvGH2C5eLvqx1UEhMLFtzTBJi0w83kc6b0PrYQNsdY0C6EcPkolXuzWj8_g8WZDBG6AMrfTGEiYTu4jH1_MWoBNLxqtLAJ25A4V7GbR_BWOr3dt8HhtjNOyNIZANPMfb2sA5ghAhsOiDHeE58ieveIAI8GfK92BbMwxyVKD7Ed_u9bazka67uFotx0Pqe3VOlwLStsP26GIyfNX17TSlwWE6Bq0nb8kHcSfPFrQCaQqp81S13fWuefYXQt-Cn4L_SOVqiq0zwbZzUcSmiL2kgRRio4jilJjAlQmw4uEjvWJ3q9N_rRT828OKx0_F33J9d1-JqoWqRCUTSqwztp7kCfXRnsPRnJJgdf3uu-l9F5oFaZ4MrU-3V0rf4C9sPZm9cwEdTQpRlcukqyu1l3klRakUymy9LIu82fNcZUoVZZbvEy0b1K6mKjDOR3yCGYLmVIPk8wz6mmd8bssyL_l6sV7KVmIm13spqrbKWJ7hIHu9iDjxl5DYeoZswsHRou6dd2-L0rn-MCLOhImh773GejtL_ycJOqprMApJai94LylQBi9_qEEeERyOpMEnygfcJFt0XT-9SiuZk6jnDH4DY05wDQ>53961</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Clang-Tidy: modernize-use-nullptr does not make sense with spaceship operator
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          pavelkryukov
      </td>
    </tr>
</table>

<pre>
    Reopening #45580, as the problem was not solved:

https://godbolt.org/z/3hed7vPvM

```c++
#include <compare>

struct A {
  int a;
  constexpr auto operator<=>(const A&) const = default;
};

bool foo(A x, A y) { return x < y; }
```

Command line:
```bash
clang-tidy-13 -checks='hicpp-use-nullptr' tidy20.cpp -- -std=c++20
```

Output:
```
<source>:5:56: warning: use nullptr [hicpp-use-nullptr]
    constexpr auto operator<=>(const A&) const = default;
                                                       ^
                                                        nullptr
```
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJytVE1z2yAQ_TXosiOPDJZtHXRw7PTWaafTP4BgbalGQsOHE-fXd5HtxE1mcmirWSF2YR-Pt6DG6nP9A-2IQzccgHGxKMt1wfgWpIfQIozONgZ7eCJ_sAG8NSfUTGxYsWPFtW1DGH2K8S9kB6sba8LMugN5L_SKFvXq9P309T6JLYuLKcYfkl2iXHSDMlEjMLFVth-lQyYe7zN9cFEF2ABbXbMAuiGAZOLVV3bwAZ9HBzIGC7RDJ4N1hMnELuHx9TQFaMUl49Ulgdbcgca9jCa8grHV7q0_tY21BvbWEsgGnpNaGzgnECIEDkN0Azwn_hQVD5AA_tzyPdjW9r0cNJhuwDddbzMb6dtLSBk5HPLQ6XM-F5CrFtXRp83wVdupccyjx3yIxozBUQzSTF7MaATyHHIfqGq7q9a8-ITQtxjGGD5Subpi6210aiqK2JTpXVJDJ8SlQ5S6xASuTICVDx_plbtbnf5rpeDvHlY-_lP-ba_v9Mp0LXQlKpmFLhist1MBf1JZkka91UiCveC9MKAtXu5ZL48IHgdS8qkLLfhRKvRtN74KlEVn6nc3j2bGZka3hhxjTrdPTrf4F6pAbud9RE-dUlTLedbWyPdFsdS45mq-kFgqvahWBd8v5lxXUuvMyAaNr6mOjPMBn2CCoD5VMetqXvDJ5svFkq9n67lUEgu53ktRqapgiwJ72ZlZ4pF-CZmrJ0pNPHgaNJ0P_m1Qet8dBsRpOcKnI9FaV4_yhObozvFoT9m0fj3x_w3SF1qP">