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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 - [c++] variadic template specialization doesn't consider template parameter default value"
   href="https://bugs.llvm.org/show_bug.cgi?id=51899">51899</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[c++] variadic template specialization doesn't consider template parameter default value
          </td>
        </tr>

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

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

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

        <tr>
          <th>Reporter</th>
          <td>nickhuang99@hotmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The following code snippet is accepted. But I thought the template
specialization should consider "First" is using default type "char" instead of
"int". Is this a bug? (I tried in godbolt.org and both GCC and MSVC++ all
behave like clang. However, still I doubt this is correct. Can someone verify
this?



template<class...Ts,class First=char>
void foo(First,Ts...){}
template<>
void foo<int*>(int,int*);</pre>
        </div>
      </p>


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