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      <base href="https://bugs.webkit.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 - Failing baseline JIT compilation of a code block and then trying to compile it from OSR from DFG/FTL will corrupt the CodeBlock"
   href="https://bugs.webkit.org/show_bug.cgi?id=158806">158806</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Failing baseline JIT compilation of a code block and then trying to compile it from OSR from DFG/FTL will corrupt the CodeBlock
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </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>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>JavaScriptCore
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>fpizlo&#64;apple.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>As the title says:

1) Inline a LLInt code block into something else in DFG or FTL.
2) Attempt to compile that LLInt code block and fail.  Failed JIT compilations leave cruft in the CodeBlock that we never clean up.
3) OSR exit from the DFG or FTL code block and force compilation of the LLInt code block.  Now we corrupt the CodeBlock.</pre>
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      </p>
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