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    <head>
      <base href="http://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 --- - TrieEdge leak in MachONormalizedFileBinaryWriter.cpp"
   href="http://llvm.org/bugs/show_bug.cgi?id=21682">21682</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>TrieEdge leak in MachONormalizedFileBinaryWriter.cpp
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>lld
          </td>
        </tr>

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

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

        <tr>
          <th>Reporter</th>
          <td>devlists@shadowlab.org
          </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>TrieNode uses a SmallVector to store TrieEdge children.
But TrieNode is allocated using an llvm::bumpPtr allocator, and so its
destructor is never invoked when the memory is freed. As a result the
SmallVector destructor is never call either, and as the SmallVector is not
allocator aware, the memory managed by the SmallVector leaks.

A possible solution would be to use an other structure to store the TrieEdge
(chained list) that does not require additional memory allocation.
TrieEdge will contain a pointer to its sibling, and will be allocated using the
llvm bumpPtr allocator.</pre>
        </div>
      </p>
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