libstdc++/9178: wfilebuf input fails when codecvt<>::encoding() == 5

[paolo@gcc.gnu.org]

Synopsis: wfilebuf input fails when codecvt<>::encoding() == 5

Responsible-Changed-From-To: unassigned->paolo
Responsible-Changed-By: paolo
Responsible-Changed-When: Sun Mar  2 09:23:39 2003
Responsible-Changed-Why:
    Patching.
State-Changed-From-To: open->analyzed
State-Changed-By: paolo
State-Changed-When: Sun Mar  2 09:23:39 2003
State-Changed-Why:
    Confirmed. Will fix together with libstdc++/9875 (its 
    underflow bits, that is).

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9178