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    <body><span class="vcard"><a class="email" href="mailto:frankhb1989@gmail.com" title="frankhb1989@gmail.com">frankhb1989@gmail.com</a>
</span> changed
              <a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED --- - Inherited constructor with dependent base class introduced by a typedef-name may not work"
   href="https://llvm.org/bugs/show_bug.cgi?id=27504">bug 27504</a>
        <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">Status</td>
           <td>RESOLVED
           </td>
           <td>REOPENED
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Resolution</td>
           <td>INVALID
           </td>
           <td>---
           </td>
         </tr></table>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED --- - Inherited constructor with dependent base class introduced by a typedef-name may not work"
   href="https://llvm.org/bugs/show_bug.cgi?id=27504#c2">Comment # 2</a>
              on <a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED --- - Inherited constructor with dependent base class introduced by a typedef-name may not work"
   href="https://llvm.org/bugs/show_bug.cgi?id=27504">bug 27504</a>
              from <span class="vcard"><a class="email" href="mailto:frankhb1989@gmail.com" title="frankhb1989@gmail.com">frankhb1989@gmail.com</a>
</span></b>
        <pre>This is still strange following the assumptions on the resolution. How does the
existence of default template argument in the base interact with the
using-declaration?

If `S<int> x;` is deleted, it also does not trigger any diagnostic. Does this
work as intended?

Moreover, will Clang++ preserve the behavior in old standard mode? (I read CWG
2070 as an "enhancement" to the standard.)

The diagnostic here is also confusing. Is it intended?</pre>
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