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      <base href="http://llvm.org/bugs/" />
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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 --- - Lots of leaks caused by DBuilder.createForwardDecl() calls in CGDebugInfo"
   href="http://llvm.org/bugs/show_bug.cgi?id=19562">19562</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Lots of leaks caused by DBuilder.createForwardDecl() calls in CGDebugInfo
          </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>All
          </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>LLVM Codegen
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>nicolasweber@gmx.de
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>LSan reports many leaks below DBuilder.createForwardDecl(). From what I
understand, MDNode::getTemporary() (called by DIBuilder::createForwardDecl())
is special in that it needs a call to MDNode::deleteTemporary() which the other
MDNode::get() functions don't need.

>From what I understand, this is usually called through
DIType::replaceAllUsesWith(). CGDebugInfo::finalize() does call
replaceAllUsesWith(), but only for types in ReplaceMap, and most callers of
createForwardDecl() don't put the result in ReplaceMap. I don't understand the
code well enough to say if that's the bug.</pre>
        </div>
      </p>
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