<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 --- - Missing support for AltiVec "__bool" keyword"
   href="http://llvm.org/bugs/show_bug.cgi?id=19220">19220</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Missing support for AltiVec "__bool" keyword
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libraries
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </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>Backend: PowerPC
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>bmoses@google.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>We recently ran into a problem trying to build the Eigen math library using
Clang.  The failing line uses the GCC extension type names [1], as is (I
suspect) reasonably common in C++ AltiVec code to avoid keyword collisions:
   typedef __vector __bool int Packet4bi;

Unfortunately, while Clang appears to support the "__vector" keyword, it
doesn't support the "__bool" keyword.

This can be easily reproduced using just a file with the single typedef line.


[1] Documentation of the GCC extensions is here:
<a href="http://gcc.gnu.org/onlinedocs/gcc-4.8.2/gcc/PowerPC-AltiVec_002fVSX-Built-in-Functions.html">http://gcc.gnu.org/onlinedocs/gcc-4.8.2/gcc/PowerPC-AltiVec_002fVSX-Built-in-Functions.html</a></pre>
        </div>
      </p>
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