<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=http://email.email.llvm.org/c/eJylkcFu3CAQhp8GX0ZBGMpufODQbrS9VLlVOa7AgE3KggXDJnn7so7aPkAlJPhnho9PwmT7oV7WD7DZ1UT4EWGOOi0PcwTrfEgOLpfvzz9PlwsRZ8KeCPtK-OPb6hIE3G9BbduWC0IfgxO4d3SphpwqvLaKEMMvBx2ccrnq-EnvkfA-ShcKpoWIIdV7QSOWYBq6PSWN4ebg5mbMpYLDmVJK-DRYJewkJj3ohmsuaqth1UMrUa2IWyWiK577WgKuzdA5X3uI8fZne9hKfu3UHkOt7f7aWQoup2FV_njwws-Mi9nyw8F4LYXnxk1eM27naYjauFgVkd8I58m9wY7oZyKfhv83CIozztk4HjmTj3Kk2nhu5WEc7ci8GCX5wtxVh0jvHJrLMhS1I01bam_GULH-a-paw5Kc24W7IQaMezjdPwJOP3rx7xcPu4zaTX4DrmOtBA>53259</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [Clang CL] __GNUC__
        </td>
    </tr>

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

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

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

<pre>
    Why doesn't clang-cl define __GNUC__?
(when it does support GNU C extensions just like 'normal clang', e.g. builtins, attributes, native vectors etc...)
</pre>
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