<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/70665>70665</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            `clang-include-cleaner` does not consider `std::swap()` specializations
        </td>
    </tr>

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

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

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

<pre>
    ```cpp
#include <string>

void str()
{
    std::string s, s1;
    std::swap(s1, s);
}
```

The `clang-include-cleaner` standalone application suggests to add `<utility>` although `<string>` is enough.

clang-tidy output:
```
<source>:6:10: warning: no header providing "std::swap" is directly included [misc-include-cleaner]
    2 | 
    3 | void str()
    4 | {
    5 |     std::string s, s1;
    6 | std::swap(s1, s);
      | ^
```
https://godbolt.org/z/Pczfsfdqo

Reference:
https://en.cppreference.com/w/cpp/algorithm/swap
https://en.cppreference.com/w/cpp/container/string/swap2
</pre>
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