PATCH (3.3): implicit typename warnings

[Loren James Rittle]

Received off-list.  As applied to 3.3 branch.  Warner, for my own
information, how did you find this?  I had to explicitly add
-Wsystem-headers to e.g. 17_intro/headers.cc in order to see it.

(To fellow library maintainers, on mainline, shall we force
17_intro/headers.cc to run with this additional warning checks on
*-*-freebsd* since they claim to have zero warning system headers?)

2003-04-14  M. Warner Losh  <imp@bsdimp.com>

	* include/std/std_fstream.h: Add required typename.

Index: include/std/std_fstream.h
===================================================================
RCS file: /cvs/gcc/gcc/libstdc++-v3/include/std/std_fstream.h,v
retrieving revision 1.14.2.4
diff -c -r1.14.2.4 std_fstream.h
*** include/std/std_fstream.h	8 Mar 2003 14:01:23 -0000	1.14.2.4
--- include/std/std_fstream.h	14 Apr 2003 20:59:45 -0000
***************
*** 450,461 ****
  
    // Generic definitions.
    template <typename _CharT, typename _Traits>
!     basic_filebuf<_CharT, _Traits>::int_type
      basic_filebuf<_CharT, _Traits>::underflow() 
      { return _M_underflow_common(false); }
  
    template <typename _CharT, typename _Traits>
!     basic_filebuf<_CharT, _Traits>::int_type
      basic_filebuf<_CharT, _Traits>::uflow() 
      { return _M_underflow_common(true); }
  
--- 450,461 ----
  
    // Generic definitions.
    template <typename _CharT, typename _Traits>
!     typename basic_filebuf<_CharT, _Traits>::int_type
      basic_filebuf<_CharT, _Traits>::underflow() 
      { return _M_underflow_common(false); }
  
    template <typename _CharT, typename _Traits>
!     typename basic_filebuf<_CharT, _Traits>::int_type
      basic_filebuf<_CharT, _Traits>::uflow() 
      { return _M_underflow_common(true); }