[Bug libstdc++/13171] New: Bugs in basic_filebuf::imbue

["peturr02 at ru dot is" <gcc-bugzilla at gcc dot gnu dot org>]

basic_filebuf::imbue hasn't been updated to handle the fix for PR 13007.

1) If pubimbue is called twice with two different locales with the same
  name, _M_codecvt points to the (possibly destroyed) facet from the first
  locale.

2) If pubimbue is called when a pipe is open, imbue doesn't update
  _M_codecvt, so it points to the facet from the old locale.

3) The same thing happens with cin, cout etc.

4) If the old locale has a stateful encoding, imbue does not update
  _M_codecvt, even if at the beginning of the file.

-- 
           Summary: Bugs in basic_filebuf::imbue
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: peturr02 at ru dot is
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13171