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      <base href="https://bugs.freedesktop.org/" />
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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 - Assertion "(_cairo_atomic_int_get (&(&surface->ref_count)->ref_count) > 0)""
   href="https://bugs.freedesktop.org/show_bug.cgi?id=91967">91967</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Assertion "(_cairo_atomic_int_get (&(&surface->ref_count)->ref_count) > 0)"
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>cairo
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

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

        <tr>
          <th>Severity</th>
          <td>major
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>xlib backend
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>chris@chris-wilson.co.uk
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>alberts.muktupavels@gmail.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>cairo-bugs@cairographics.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>In _get_image_surface function I get assertion:
Assertion "(_cairo_atomic_int_get (&(&surface->ref_count)->ref_count) > 0)"
failed.

1) image is created in "if (try_shm && pixman_format)", line 785
2) then image->base is destroyed in same if, line 809
3) then cairo enters "if (ximage == NULL)", line 836
4) then it fails to get ximage and enters "if (ximage == NULL)", line 879
5) that moves to BAIL where cairo_surface_destroy is called on destroyed?
surface.

Application crash. I tried to add "if (cairo_surface_get_reference_count
(&image->base) != )" and it "fixed" assertion/crash. But I guess that is not
right way to fix it.</pre>
        </div>
      </p>
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