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    <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 --- - core DR 580 - template parameters and base-specifiers access checked too eagerly"
   href="http://llvm.org/bugs/show_bug.cgi?id=15209">15209</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>core DR 580 - template parameters and base-specifiers access checked too eagerly
          </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>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>zilla@kayari.org
          </td>
        </tr>

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

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>class A {
  typedef int I; // private member
  template<int> struct Q;
  template<int> friend struct R;
protected:
  struct B { };
};
template<A::I> struct A::Q { };
template<A::I> struct R { };
struct D: A::B, A { };

t.cc:9:13: error: 'I' is a private member of 'A'
template<A::I> struct R { };
            ^
t.cc:2:15: note: implicitly declared private here
  typedef int I; // private member
              ^
t.cc:10:14: error: 'B' is a protected member of 'A'
struct D: A::B, A { };
             ^
t.cc:6:10: note: declared protected here
  struct B { };
         ^

The member, A::Q, is handled correctly, but the friend R and derived type D
should also be able to refer to non-public names from A.

<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#580">http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#580</a></pre>
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