<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 - ambiguity accessing anonymous union member present in multiple bases despite explicit qualification"
   href="https://bugs.llvm.org/show_bug.cgi?id=35832">35832</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>ambiguity accessing anonymous union member present in multiple bases despite explicit qualification
          </td>
        </tr>

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

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

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

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

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

        <tr>
          <th>Reporter</th>
          <td>rjmccall@apple.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>harza:/tmp$ cat red.cpp
class B {
protected:
 int i;
 union { int j; };
};

class X : public B { };
class Y : public B { };

class Z : public X, public Y {
 int a() { return X::i; } // works
 int b() { return X::j; } // fails
};
harza:/tmp$ clang red.cpp 
red.cpp:12:22: error: ambiguous conversion from derived class 'Z' to base class
      'B':
    class Z -> class X -> class B
    class Z -> class Y -> class B
 int b() { return X::j; } // fails
                     ^
1 error generated.

Report by Dave Zarzycki!</pre>
        </div>
      </p>


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