<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 --- - non-type template argument not detected as constexpr in template variable"
   href="https://llvm.org/bugs/show_bug.cgi?id=24676">24676</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>non-type template argument not detected as constexpr in template variable
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>3.6
          </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>bernarddesmyter@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The following program does not compile on clang 3.6.2 :
#include <array>
template<int w> constexpr std::array<int, 1> val{w};

The code is rejected with this error :
a.cpp:4:34: error: constexpr variable 'val' must be initialized by a constant
expression
constexpr std::array<int, 1> val{w};
                                ~^~
1 error generated.


This bug is not present when array is not used :
template<int w> constexpr int{w};
is fine</pre>
        </div>
      </p>
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