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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - vkEnumeratePhysicalDevices just once instead of twice results in a segfault."
   href="https://bugs.freedesktop.org/show_bug.cgi?id=105099">105099</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>vkEnumeratePhysicalDevices just once instead of twice results in a segfault.
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>git
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86 (IA32)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Drivers/Vulkan/intel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-3d-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>cheako+bugs_freedesktop_org@mikemestnik.net
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-3d-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>jason@jlekstrand.net
          </td>
        </tr></table>
      <p>
        <div>
        <pre>This clashes with the documentation for this interface but not it's general
usage so it's gone unnoticed.  <a href="https://pastebin.com/tTmzeeid">https://pastebin.com/tTmzeeid</a>

      uint32_t gpu_count = 1;
      /* TODO: This just selects first GPU. */
      vkEnumeratePhysicalDevices (instance, &gpu_count, &gpu);

Changing this to...

      uint32_t gpu_count = 0;
      vkEnumeratePhysicalDevices (instance, &gpu_count, NULL);
      gpu_count = 1;
      /* TODO: This just selects first GPU. */
      vkEnumeratePhysicalDevices (instance, &gpu_count, &gpu);

works around the issue.</pre>
        </div>
      </p>


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