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      <base href="https://llvm.org/bugs/" />
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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 --- - Parameter pack expansion doesn't work properly when used to define argument list"
   href="https://llvm.org/bugs/show_bug.cgi?id=30518">30518</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Parameter pack expansion doesn't work properly when used to define argument list
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </td>
        </tr>

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

        <tr>
          <th>Hardware</th>
          <td>Other
          </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>C++14
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>michele.caini@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>I refer to this question on SO:
<a href="http://stackoverflow.com/questions/39690166/can-i-expand-a-parameters-pack-and-define-an-arguments-list-with-it">http://stackoverflow.com/questions/39690166/can-i-expand-a-parameters-pack-and-define-an-arguments-list-with-it</a>

In particular, the following code compiles, but it shouldn't because of
[temp.variadic]:

    template<typename... T>
    struct S {
        template<T... I>
        void m() {}
    };

    int main() {
        S<int, char> s;
        s.m<0>();
        S.m<>();
    }</pre>
        </div>
      </p>
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