<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/57835>57835</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang-format --dry-run doesn't point to formatting error when multibyte characters are involved.
        </td>
    </tr>

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

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

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

<pre>
    Consider the following code:
```
hr = ieHist->AddUrl(L"https://www.mozilla.org/2", L"Mozilla HTTPS Test 🦊",
                    0);
```
`clang-format --dry-run`'s output for this is:
```
foo.c:1:78: warning: code should be clang-formatted [-Wclang-format-violations]
hr = ieHist->AddUrl(L"https://www.mozilla.org/2", L"Mozilla HTTPS Test 🦊",
```

When the emoji is removed, the output is:
```
foo.c:1:73: warning: code should be clang-formatted [-Wclang-format-violations]
hr = ieHist->AddUrl(L"https://www.mozilla.org/2", L"Mozilla HTTPS Test",
                                                                        ^
```
(notice the output is now 3 lines instead of 2, with a "pointer").
</pre>
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