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      <base href="https://bugs.llvm.org/">
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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 - Incorrect error on static_assert expression"
   href="https://bugs.llvm.org/show_bug.cgi?id=43990">43990</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Incorrect error on static_assert expression
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>trunk
          </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++11
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>pkeir@outlook.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>Created <span class=""><a href="attachment.cgi?id=22806" name="attach_22806" title="Code to produce the issue described.">attachment 22806</a> <a href="attachment.cgi?id=22806&action=edit" title="Code to produce the issue described.">[details]</a></span>
Code to produce the issue described.

The C++11 code below produces a compilation error stating that the
static_assert expression is not an integral constant expression. GCC trunk
compiles this. Commenting-out the static assert removes the error.

template <typename T>
constexpr bool bar(T &)  { return true; }

template <typename T>
constexpr bool foo(T &x) { static_assert(bar(x),""); return bar(x); }

int main(int argc, char *argv[])
{
  int i;
  constexpr bool x = foo(i);
  return 0;
}</pre>
        </div>
      </p>


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