<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=http://email.email.llvm.org/c/eJylkk2P0zAQhn-Nc7EaJU7zdfChuwsIgcQBJMRxbE8TL44dxU7Z8uuZtEVdEDekfIwzzjvPOx4VzFm-9ydw1nB8SeijDZ6Jt0eEtC7IKbMit56zpthpt6M9FHEbebQOfXJnDlrjnNBwdebagR9yVjyx4nB9fh3R808z-seP_DsuHl3kQMIKrR-4DtNMOob_sGm8A8Q7QeToQTnaTN-MjdeYYz7kr5mqJyYezDpN5w3PB24sDD7EZPUGO9gT-j-4WP3w5gWm2SGr6d9uTGmOrDpQFbqGYFRwKQ_LVvYn3R_elf232H2h5vSZkZXpqx4yWNMYFnnwEBNEC5_T6sIJsnVx8i9FMriqnAzTwrnT79duXsIz6kRLG-OKm_VatG2VjRJrbKpC1H1TgjiaWpsG2l5VxRF6YxqROVDUT0lemBCBmqwdBWQo-__yVopClKUo21Ls27rPC4NFZ0D1R-w6bfZsX-AE1uWbztapbJEXSbUOkZLOxhTvSYjRDh7xQkuEySaH8nZ-1_O3t0G8Dd0_Ziy7QMoL4S9Cp-Xg>52773</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            -cl-ext with invalid value is silently accepted
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            opencl
      </td>
    </tr>

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

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

<pre>
    Invalid extension/feature value in `-cl-ext` is silently accepted by clang.

When OpenCL kernels are being compiled with extensions/features enabling/disabling e.g. `-cl-ext=+dummy` no diagnostic is given.

[Example](https://godbolt.org/z/KG19Ys8Tn)
</pre>
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