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    <head>
      <base href="https://llvm.org/bugs/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - crashlog.py leads to a segfault"
   href="https://llvm.org/bugs/show_bug.cgi?id=27563">27563</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>crashlog.py leads to a segfault
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>lldb
          </td>
        </tr>

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

        <tr>
          <th>Hardware</th>
          <td>Macintosh
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>MacOS X
          </td>
        </tr>

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

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

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>All Bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>lldb-dev@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>antonio.frighetto@studenti.unitn.it
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Let's say a crash dump has an unspecified stack frame, like the following:
5  ???  0x00007fff9a51076f objc_exception_throw + 432

Then, once set up lldb and imported crashlog.py script (alternatively via
PYTHONPATH=/path/to/LLDB.framework/Resources/Python ./crashlog.py
~/Library/Logs/DiagnosticReports/a.crash), after being loaded, line 867:

images = crash_log.find_images_with_identifier (ident) 

seems to lead to a segmentation fault. Tested on multiple crashes. Looks like
as if a little fix may be as follows:

...
for ident in crash_log.idents:
    if ident != "???":
        images = crash_log.find_images_with_identifier(ident)
        if images:
...

Bye, Antonio.</pre>
        </div>
      </p>
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