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      <base href="https://bugs.llvm.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 failure in `setInvalidDecl()` when using modules"
   href="https://bugs.llvm.org/show_bug.cgi?id=38531">38531</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Assertion failure in `setInvalidDecl()` when using modules
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

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

        <tr>
          <th>OS</th>
          <td>Linux
          </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>Modules
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>andrewjcg@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=20683" name="attach_20683" title="Source setup with command reproducing bug.">attachment 20683</a> <a href="attachment.cgi?id=20683&action=edit" title="Source setup with command reproducing bug.">[details]</a></span>
Source setup with command reproducing bug.

Getting a clang compiler assertion failure in `clang::Decl::setInvalidDecl()`
when using modules and a lot of template meta-programming.  Apologies for the
complicated repro that I attached -- I tried to reduce this but wasn't able to
break the dependency on libstdc++ headers or simplify the template code.  This
crash originally came from using
<a href="https://github.com/facebook/folly/blob/master/folly/Function.h">https://github.com/facebook/folly/blob/master/folly/Function.h</a>.</pre>
        </div>
      </p>


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