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    <head>
      <base href="https://bugs.llvm.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 - Class member used in a member function has not yet been instantiated"
   href="https://bugs.llvm.org/show_bug.cgi?id=47417">47417</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Class member used in a member function has not yet been instantiated
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>10.0
          </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>new bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>lozanbt47@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=23927" name="attach_23927" title="Minimal case that describes the issue">attachment 23927</a> <a href="attachment.cgi?id=23927&action=edit" title="Minimal case that describes the issue">[details]</a></span>
Minimal case that describes the issue

If in a template class we have a constexpr member function which also has
'used' attribute, then in the function we cannot use member variables which are
declared below the member function. In such a case, we'll get the following
error:

error: no member 'X' in 'Y'; it has not yet been instantiated


If we move the declaration of the member variables above the function
definition, then everything works properly.

Also, if we remove constexpr or __attribute__((used)) then it works properly.</pre>
        </div>
      </p>


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