<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/108772>108772</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            template typename expantion for a imedite call of a template lambada generate eror when in if 
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          MohammedAhmed381
      </td>
    </tr>
</table>

<pre>
    I know you are wondering how all this is jammed in one place.
but trust me you do not want to see the original code

`int main() 
{
  return 0;
}

template<typename... TCallingP>
bool Func()
{
// generate the error
  if
    (
    (
    (
    []<typename TCalling>()
  {
    return true;
  }
    ).template operator() < TCallingP > ()
    ) && ...
    )
    return true;

// Works fine
  bool lRes =
    (
    (
    (
    []<typename TCalling>()
  {
    return true;
  }
    ).template operator() < TCallingP > ()
    ) && ...
    );

  return lRes;

};`

The error is 
1>FileName.cpp(13,5): error : expression contains unexpanded parameter pack 'TCallingP'

</pre>
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