<html>
    <head>
      <base href="https://llvm.org/bugs/" />
    </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 --- - compiler error when accessing a static constexpr value of struct"
   href="https://llvm.org/bugs/show_bug.cgi?id=25573">25573</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>compiler error when accessing a static constexpr value of struct
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>3.7
          </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>ytj000@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>// The following code compiles in gcc (<a href="http://goo.gl/gFGc9K">http://goo.gl/gFGc9K</a>), but not clang
(<a href="http://goo.gl/woxdi1">http://goo.gl/woxdi1</a>).
#include <type_traits>
template<class T> struct Foo { Foo(T = nullptr) {} };
using U = std::is_constructible<Foo<int>>;
bool b = U::value;  // If we remove this line, it compiles in both gcc and
clang. 
                    // However the value of `b` is true, which is
counterintuitive.
int main() {}</pre>
        </div>
      </p>
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