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    <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 - make_optional doesn't accept initializer list and parameter pack"
   href="https://bugs.llvm.org/show_bug.cgi?id=32133">32133</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>make_optional doesn't accept initializer list and parameter pack
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libc++
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </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>enhancement
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>All Bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>hocheung20@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>According to n4618 p. 558
(<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2016/n4618.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2016/n4618.pdf</a>):

There will be 3 versions of make_optional, 2 of which are currently
unimplemented by libc++:

Implemented:
template <class T> constexpr optional<decay_t<T>> make_optional(T&& v);

Unimplemented:
template <class T, class...Args> constexpr optional<T> make_optional(Args&&...
args);
template <class T, class U, class... Args> constexpr optional<T>
make_optional(initializer_list<U> il, Args&&... args);</pre>
        </div>
      </p>


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