<html>
    <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 - clang does not produce good debug information for typedefs to anonymous unions"
   href="https://bugs.llvm.org/show_bug.cgi?id=43054">43054</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>clang does not produce good debug information for typedefs to anonymous unions
          </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>enhancement
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>C++
          </td>
        </tr>

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

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

        <tr>
          <th>CC</th>
          <td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Test program:

#include <pthread.h>

class X {
  using AnonUnionTypedef = pthread_mutex_t;
  AnonUnionTypedef u;
} x;

(gdb) pi gdb.lookup_type('X::AnonUnionTypedef').strip_typedefs().name is None
True

Conversely if I compile with g++:

(gdb) pi gdb.lookup_type('X::AnonUnionTypedef').strip_typedefs().name 
'pthread_mutex_t'</pre>
        </div>
      </p>


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