<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/61246>61246</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Massive performance regression in sanitizers for clang-15, clang-16
        </td>
    </tr>

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

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

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

<pre>
    I have some test code written in C++.

For versions of clang++-14 and below, running the tests with `-fsanitize=undefined,address`, they complete in ~30s on my machine.

However, for versions of clang++-15 and above, they'll take upwards of minutes.

I've never had this kind of problem before so I'm wondering if anyone else has.

I'm using Ubuntu 22.04 via WSL2 on Win11. I can provide any more info as needed.
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJx8Us2K4zgQfhr5UsRYkuMkBx_6h7ANu6dl6XPZKsfalkpBkh3Sh3n2Qe5uhmZgLrbB319VfZiSvTBRL_aPYv9c4ZLnEPvR4zu-YaqGYO79C8y4EqTgCTKlDGMwBLdocyYGy_Ak1KNQj7VonkXz8PE8hwgrxWQDJwgTjA758oHbyRaQDQzkwk2oJ4gLs-UL5PnDIMHN5hlE1-ymhGyzfSehnxc2NFkmI9QTGhMpJdE1RSDPdIcx-KujTCXRD90kCAz-Dh7H2TJ9C_dXuNFKsVCnP-XcbzlxCCt92Qh1cA4yvhEs1xtGs7G85SVT-mbyItRhJeDiBDMayLNN8GbZFMY1hsGRh4GmEMtyoeA93AIbimUbdgLke2ACcolgxt_lPSypQP8bFs4LKFU3LawW4fXfv1WZ_9WylDW8wIhcLFdrqKiCL6aWpwCYgIkMmboyvTYnfcKKetkdjkrqY6eruR9ldzDHSZ_2B6N1N8pWSdmZQe41DoRjZXvVKN3o5iCPWja6PulWFbAkaic6oWgb8mhd7dzq6xAvlU1pob6Tqu0qhwO5tHVQKaYbbD-FUqWSsS-c3bBckmgbZ1NOv1SyzY76f0qNV4IrxSlEjzwSRLqUgtiwNfSrRTFtB9-OvJP7ctTP765aouvnnK9J6AehzkKdLzbPy1CPwQt1Lp6fr901hv9pzEKdt6RJqPM2yc8AAAD__50_EiY">