<html>
    <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 - __is_constructible intrinsic fails to compile within pack expansion"
   href="https://bugs.llvm.org/show_bug.cgi?id=45730">45730</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>__is_constructible intrinsic fails to compile within pack expansion
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>9.0
          </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>CUDA
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>james@invexed.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>#include <type_traits>

template<bool...>
struct BooleanSink {};

// error: cannot yet mangle expression type TypeTraitExpr
template<typename... Ts>
auto f(BooleanSink<__is_constructible(int, Ts)...>)
{}

// compiles successfully
template<typename... Ts>
auto f(BooleanSink<std::is_constructible_v<int, Ts>...>)
{}</pre>
        </div>
      </p>


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