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    <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 - clang-cl crashing constantly when compiling Mozilla code"
   href="https://bugs.llvm.org/show_bug.cgi?id=39848">39848</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>clang-cl crashing constantly when compiling Mozilla code
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </td>
        </tr>

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

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

        <tr>
          <th>OS</th>
          <td>Windows XP
          </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>-New Bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>jorgk@jorgk.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Sorry, I'm new here. As you know, Mozilla is using clang-cl to compile Firefox
and Thunderbird on Windows. They've switched from MSVC a few months ago.

clang-cl is much faster than MSVC so I've tolerated the occasional compiler
crash that goes away when you compile again.

Last night I update my development environment (mach bootstrap) and that pulled
in some new LLVM version, I believe. Since then, clang-cl is crashing
constantly, so bad that I switched back to MSVC (since after all, I need to
work on code).

Here are the dump files and related sources: <a href="https://we.tl/t-KuzTJobRc8">https://we.tl/t-KuzTJobRc8</a>

I'm happy to set up a second machine to see whether it crashes there too, but
the development box is back to MSVC for now.</pre>
        </div>
      </p>


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