<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/89396>89396</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Clang issuing incorrect diagnostic under C23+pedantic
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          Th3T3chn0G1t
      </td>
    </tr>
</table>

<pre>
    `clang -std=c23 -pedantic` enables `-Wgnu-binary-literal` despite binary literals being standardised in C23. This seems incorrect.

**Expected Behaviour:**
Standardized binary literals are not marked as an extension by `-pedantic`

**Actual Behaviour:**
`-Wgnu-binary-literal` is set so `error: binary integer literals are a GNU extension` diagnostic is issued

**Version/Env:**
```
> clang -v
clang version 18.1.3
Target: x86_64-pc-windows-msvc
Thread model: posix
InstalledDir: C:\Program Files\LLVM\bin
```
</pre>
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