<html>
    <head>
      <base href="https://bugs.llvm.org/">
    </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 - lld-link ignores IMAGE_COMDAT_SELECT_* attributes"
   href="https://bugs.llvm.org/show_bug.cgi?id=40094">40094</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>lld-link ignores IMAGE_COMDAT_SELECT_* attributes
          </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>Windows NT
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>enhancement
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>COFF
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>ruiu@google.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>lld-link currently ignores "Selection field" of a COMDAT symbol which is
described in the spec:
<a href="https://docs.microsoft.com/en-us/windows/desktop/debug/pe-format#comdat-sections-object-only">https://docs.microsoft.com/en-us/windows/desktop/debug/pe-format#comdat-sections-object-only</a>

lld-link's current behavior is IMAGE_COMDAT_SELECT_ANY. So, there are two or
more COMDAT section, lld-link just picks any section from them, even though
MSVC link.exe may print out an error if their attributes are not of SELECT_ANY.

This is simply a missing feature and needs to be implemented to lld-link.</pre>
        </div>
      </p>


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