<html>
    <head>
      <base href="http://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 --- - SD-6 Feature Test Recommendations"
   href="http://llvm.org/bugs/show_bug.cgi?id=18584">18584</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>SD-6 Feature Test Recommendations
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libc++
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>URL</th>
          <td>http://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>enhancement
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>All Bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>mclow.lists@gmail.com
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>shea@shealevy.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>hhinnant@apple.com, llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Standing Document 6 recommends a series of macros for checking the status of
various standard features in the implementation. While clang seems to have
implemented this for pure language features, libc++ does not yet have support
for this. For example, although libc++ does support compile-time integer
sequences as specified in n3658, the <utility> header does not define
__cpp_lib_integer_sequence as recommended by SD6.</pre>
        </div>
      </p>
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      <ul>
          <li>You are on the CC list for the bug.</li>
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