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      <base href="http://llvm.org/bugs/" />
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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 --- - Truncated output of negative int64_t to std::ostream with std::hex"
   href="http://llvm.org/bugs/show_bug.cgi?id=21428">21428</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Truncated output of negative int64_t to std::ostream with std::hex
          </td>
        </tr>

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

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

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

        <tr>
          <th>Reporter</th>
          <td>kyle@mayeses.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvmbugs@cs.uiuc.edu, mclow.lists@gmail.com
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=13263" name="attach_13263" title="A minimal example of the problem.">attachment 13263</a> <a href="attachment.cgi?id=13263&action=edit" title="A minimal example of the problem.">[details]</a></span>
A minimal example of the problem.

When outputting any negative int64_t to a std::ostream after having used the
std::hex format flag, the output has the last digit truncated.

std::cout << std::hex << static_cast<int64_t>(-1) << std::endl;

Expected output: 177777777777777777777
Actual output:   1777777777777777777777</pre>
        </div>
      </p>
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