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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 - Auto type deduction of member variable template within class template fails to compile"
   href="https://bugs.llvm.org/show_bug.cgi?id=43556">43556</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Auto type deduction of member variable template within class template fails to compile
          </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++14
          </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>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
          </td>
        </tr></table>
      <p>
        <div>
        <pre><a href="https://godbolt.org/z/cGowWI">https://godbolt.org/z/cGowWI</a>

The following code fails to compile with Clang (but is accepted by GCC and
MSVC)

    template<typename>
    struct S {
        template<typename T>
        static constexpr auto value = T{0};
    };

    int main()
    {
        return S<int>::value<int>;
    }

This can be resolved by explicitly specifying the type of S::value instead:

    template<typename T>
    static constexpr T value = T{0};

Furthermore, this bug only seems to occur if S and S::value are both templates.</pre>
        </div>
      </p>


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