[Bug libstdc++/13296] New: unnecessary libunwind support in libstdc++-v3

["wilson at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

The command
  cd libstdc++-v3
  find . -type f | xargs grep LIBUNWIND
shows that there is a lot of unnecessary support for libunwind in libstdc++. 
Since the gcc driver automatically adds -lunwind, there is no need for libstdc++
to do anything to use libunwind.  All of the macros found by the above command are
unnecessary, except for the LIBUNWIND_STD_ABI macro.

This is just to document a problem that I don't feel like fixing immediately, so
that I won't forget it.

-- 
           Summary: unnecessary libunwind support in libstdc++-v3
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libstdc++
        AssignedTo: wilson at gcc dot gnu dot org
        ReportedBy: wilson at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: ia64-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13296