re PR libstdc++/57808 (operators == and != for regex_token_iterator need to be const)

2013-07-04  Ray Chason  <chasonr@newsguy.com>
	    Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/57808
	* include/bits/regex.h (regex_token_iterator<>::operator==,
	regex_token_iterator<>::operator!=, regex_token_iterator<>::operator*,
	regex_token_iterator<>::operator->): Declare const.

Co-Authored-By: Paolo Carlini <paolo.carlini@oracle.com>

From-SVN: r200662

libstdc++-v3/ChangeLog

+2013-07-04  Ray Chason  <chasonr@newsguy.com>
+	    Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR libstdc++/57808
+	* include/bits/regex.h (regex_token_iterator<>::operator==,
+	regex_token_iterator<>::operator!=, regex_token_iterator<>::operator*,
+	regex_token_iterator<>::operator->): Declare const.
+
 2013-07-01  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	* include/bits/stl_list.h (list<>::insert(iterator,

libstdc++-v3/include/bits/regex.h

@@ -2418,28 +2418,28 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
        * @todo Implement this function.
        */
       bool
-      operator==(const regex_token_iterator& __rhs);
+      operator==(const regex_token_iterator& __rhs) const;
 
       /**
        * @brief Compares a %regex_token_iterator to another for inequality.
        * @todo Implement this function.
        */
       bool
-      operator!=(const regex_token_iterator& __rhs);
+      operator!=(const regex_token_iterator& __rhs) const;
 
       /**
        * @brief Dereferences a %regex_token_iterator.
        * @todo Implement this function.
        */
       const value_type&
-      operator*();
+      operator*() const;
 
       /**
        * @brief Selects a %regex_token_iterator member.
        * @todo Implement this function.
        */
       const value_type*
-      operator->();
+      operator->() const;
 
       /**
        * @brief Increments a %regex_token_iterator.