<html>
    <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 --- - Clang crashes with -fmodules to compile clang-interpreter/main.cpp"
   href="https://llvm.org/bugs/show_bug.cgi?id=25501">25501</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Clang crashes with -fmodules to compile clang-interpreter/main.cpp
          </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>geek4civic@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=15270" name="attach_15270" title="Reduced-testcase.zip (requires external libc++)">attachment 15270</a> <a href="attachment.cgi?id=15270&action=edit" title="Reduced-testcase.zip (requires external libc++)">[details]</a></span>
Reduced-testcase.zip (requires external libc++)

$ clang++ -std=c++11 -stdlib=libc++ -I llvm/include -I clang/include
-fsyntax-only -fmodules clang-interpreter-main.cpp

clang-3.8: clang/lib/Serialization/ASTReaderDecl.cpp:1493: void
clang::ASTDeclReader::MergeDefinitionData(clang::CXXRecordDecl *, struct
CXXRecordDecl::DefinitionData &&): Assertion
`Reader.Lookups.find(MergeDD.Definition) == Reader.Lookups.end() && "already
loaded pending lookups for merged definition"' failed.

A reduced testcase is attached. Excuse me, I haven't reduced libc++.</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>