[Bug c++/58047] New: parse error with typedef introduced from base class

[roshan.shariff at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58047

            Bug ID: 58047
           Summary: parse error with typedef introduced from base class
           Product: gcc
           Version: 4.8.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: roshan.shariff at gmail dot com

Created attachment 30585
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30585&action=edit
Test case exhibiting parse error

Trying to compile the attached code with g++ 4.8.1 gives an error. The code
compiles and works fine with clang.

template <int N>
struct print_arg {
  void print () { std::cout << N << '\n'; }
};

struct const_holder {
  static constexpr int CONSTANT = 42;
};

template <typename T>
struct identity {
  using type = T;
};

template <class T>
struct test_case : public identity<T> {
  using typename identity<T>::type;
  print_arg<type::CONSTANT> printer; // <- parse error
};

int main () {
  // Should print 42
  test_case<const_holder>().printer.print();
}

The attached file contains two variants of the above code that do work fine.
Trying to compile it produces the following error message:

$ g++ -std=c++11 gccbug.cpp -o gccbug
gccbug.cpp:31:3: error: parse error in template argument list
   print_arg<type::CONSTANT> printer;
   ^
gccbug.cpp: In instantiation of 'struct test_case<const_holder>':
gccbug.cpp:46:27:   required from here
gccbug.cpp:31:29: error: expected primary-expression
   print_arg<type::CONSTANT> printer;
                             ^
gccbug.cpp: In function 'int main()':
gccbug.cpp:46:29: error: 'struct test_case<const_holder>' has no member named
'printer'
   test_case<const_holder>().printer.print();