[Bug libstdc++/12206] New: Segmentation fault in basic_filebuf::seekoff

[peturr02 at ru dot is]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12206

           Summary: Segmentation fault in basic_filebuf::seekoff
           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

basic_filebuf::imbue(loc) only modifies _M_codecvt if the correct codecvt
facet is found in loc; otherwise _M_codecvt is left pointing at the
codecvt facet from the previous locale, which may no longer be valid.
If basic_filebuf::seekoff is called when _M_codecvt has become invalid,
the program segfaults.