<html>
    <head>
      <base href="https://bugs.llvm.org/">
    </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 - windows x64 exception data is innacurate"
   href="https://bugs.llvm.org/show_bug.cgi?id=47459">47459</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>windows x64 exception data is innacurate
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </td>
        </tr>

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

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Windows NT
          </td>
        </tr>

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

        <tr>
          <th>Severity</th>
          <td>enhancement
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>new bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>jerome_witmann@symantec.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=23935" name="attach_23935" title="fix for wrong $ip2state records.">attachment 23935</a> <a href="attachment.cgi?id=23935&action=edit" title="fix for wrong $ip2state records.">[details]</a></span>
fix for wrong $ip2state records.

Hi,

While I was scrutinizing some generated code inside IDA PRO, I realized the
$ip2state records are wrong by 1 byte... which in turn make the disassembler
display the wrong start for try[]. This is bad, as it would dispatch the wrong
exception handler if an error happens on the 1st instruction.

I spent some time and found that the source of the problem is
WinException::getLabel() used in computeIP2StateTable. While the function
correctly build a label plus 1 for other EH table uses, in computeIP2StateTable
it should really not add 1. So I create a new function that just does that and
it resolved the issue.

I attach a patch... I don't really have time to do more than this, nor can i
provide a test file.

Best regards,
Jerome WITMANN</pre>
        </div>
      </p>


      <hr>
      <span>You are receiving this mail because:</span>

      <ul>
          <li>You are on the CC list for the bug.</li>
      </ul>
    </body>
</html>