Given the following testcase:

/**
 * @defgroup test Test
 */

/**
 * @ingroup test
 *
 * Test class
 */
struct Test_fn_1
{
public:

  /**
   * function call operator
   */
  void operator()(int) const;

  /**
   * @copydoc operator()(int)const
   */
  void operator()(int);
};

Copydoc does not seem to know about the const qualifier on the operators.

The following error message occurs while running doxygen:

Generating docs for compound Test_fn_1...
C:/Workspace/doxygen-svn/bin/debug/test.h:19: Warning: target operator()(int) of \copydoc command not found

I tried debugging through the code to see what was going on and the best I can tell the lex code for operators is not checking for a const qualifier on those methods.