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    <body><span class="vcard"><a class="email" href="mailto:eric@efcs.ca" title="Eric Fiselier <eric@efcs.ca>"> <span class="fn">Eric Fiselier</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - INVOKEing pointer to const&-qualified member function with rvalue results in an error"
   href="https://bugs.llvm.org/show_bug.cgi?id=40524">bug 40524</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;">Resolution</td>
           <td>---
           </td>
           <td>FIXED
           </td>
         </tr>

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

         <tr>
           <td style="text-align:right;">CC</td>
           <td>
                
           </td>
           <td>eric@efcs.ca
           </td>
         </tr></table>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - INVOKEing pointer to const&-qualified member function with rvalue results in an error"
   href="https://bugs.llvm.org/show_bug.cgi?id=40524#c1">Comment # 1</a>
              on <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - INVOKEing pointer to const&-qualified member function with rvalue results in an error"
   href="https://bugs.llvm.org/show_bug.cgi?id=40524">bug 40524</a>
              from <span class="vcard"><a class="email" href="mailto:eric@efcs.ca" title="Eric Fiselier <eric@efcs.ca>"> <span class="fn">Eric Fiselier</span></a>
</span></b>
        <pre>Invoking a pointer to a 'const &' member function on an rvalue is a C++2a
extension. Prior to C++2a GCC and Clang accept it as conforming extension. But
in order for the extension to be conforming, it has to be disabled in SFINAE
contexts -- otherwise it could change the meaning of well-defined code.

If you compile your example with -std=c++17 -pedantic-errors then both
invocations are rejected. (<a href="https://godbolt.org/z/ofS4AB">https://godbolt.org/z/ofS4AB</a>)

Both libc++ and libstdc++ reject this prior to C++2a but accept it after. This
is the correct behavior. There is nothing to do here.</pre>
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