<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 --- - befriending a member function of a nested class hides its default arguments"
   href="http://llvm.org/bugs/show_bug.cgi?id=18432">18432</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>befriending a member function of a nested class hides its default arguments
          </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>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, llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>usury:clang$ cat /tmp/red.cpp
struct A {
  struct B {
    B(int x = 0) {}
    void foo(int x = 0);
  };
  friend B::B(int);
  friend void B::foo(int);
};

void test() {
  A::B b;
  b.foo();
}

usury:clang$ clang -fsyntax-only /tmp/red.cpp
/tmp/red.cpp:11:8: error: no matching constructor for initialization of 'A::B'
  A::B b;
       ^
/tmp/red.cpp:6:13: note: candidate constructor not viable: requires 1 argument,
but 0 were provided
  friend B::B(int);
            ^
1 error generated.

usury:clang$ sed -i -e 's@friend B@//friend B@' /tmp/red.cpp
usury:clang$ clang -fsyntax-only /tmp/red.cpp
tmp/red.cpp:12:9: error: too few arguments to function call, expected 1, have 0
  b.foo();
  ~~~~~ ^
/tmp/red.cpp:7:3: note: 'foo' declared here
  friend void B::foo(int);
  ^
1 error generated.



These friend declarations are useless --- members of a nested class
automatically have friend-level access to the class --- but they shouldn't
interfere with the default arguments.</pre>
        </div>
      </p>
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