<table border="1" cellspacing="0" cellpadding="8">

    <tr>

        <th>Issue</th>

        <td>

            <a href=https://github.com/llvm/llvm-project/issues/121607>121607</a>

        </td>

    </tr>

    <tr>

        <th>Summary</th>

        <td>

            [clang-tidy] cert-err33-c false positive on user-defined function named timer

        </td>

    </tr>

    <tr>

      <th>Labels</th>

      <td>

            clang-tidy,

            false-positive

      </td>

    </tr>

    <tr>

      <th>Assignees</th>

      <td>

      </td>

    </tr>

    <tr>

      <th>Reporter</th>

      <td>

          LegalizeAdulthood

      </td>

    </tr>

</table>

<pre>

    1. `git clone https://github.com/LegalizeAdulthood/iterated-dynamics`

2. `git checkout 53c6c9909e2d2e320ccedc55e9ed2d59fbcb1705`

3. configure CMake project, optionally using the provided `CMakePresets.json`

4. Browse to `libid/bifurcation.cpp`, line 471 on the call to the `timer` function

5. IDEs (and presumably clang-tidy from the command-line) flag the call to `timer` as a `cert-err33-c` violation

6. The documentation doesn't list the function `timer` as one that would be flagged by this check

7. Even if a system function called `timer` (I couldn't find any such function) existed, if a user-defined overload is distinguished from the system function, then it still shouldn't be flagged as a violation.

![Image](https://github.com/user-attachments/assets/fd014e17-6dd7-488f-bae7-3c77ea0de42d)

</pre>

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