gcc 4.4.0 abi_check fail on ubuntu 9.04

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This is my first experience compiling gcc from source.  Can someone
advise if these errors are serious, or if there is a way to fix them?
I've snipped for brevity and only included a few typical errors from
each category.

//libstdc++.sum
                === libstdc++ tests ===

Schedule of variations:
    unix

Running target unix
Running /home/zach/gcc-4.4.0/libstdc++-v3/testsuite/libstdc++-abi/abi.exp ...
FAIL: abi_check
<snip/>
FAIL: 23_containers/forward_list/ext_pointer/operations/4.cc (test for
excess errors)
UNRESOLVED: 23_containers/forward_list/ext_pointer/operations/4.cc
compilation failed to produce executable


//libstdc++.log
159 added symbols
0
_ZSt13__check_facetISt7num_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEEERKT_PS7_
std::num_get<char, std::istreambuf_iterator<char,
std::char_traits<char> > > const&
std::__check_facet<std::num_get<char, std::istreambuf_iterator<char,
std::char_traits<char> > > >(std::num_get<char,
std::istreambuf_iterator<char, std::char_traits<char> > > const*)
version status: incompatible
GLIBCXX_3.4
type: function
status: added

1
_ZN9__gnu_cxx18stdio_sync_filebufIwSt11char_traitsIwEE8syncputcEj
__gnu_cxx::stdio_sync_filebuf<wchar_t, std::char_traits<wchar_t>
>::syncputc(unsigned int)
version status: compatible
GLIBCXX_3.4.10
type: function
status: added

2
_ZSt10__distanceIPKcENSt15iterator_traitsIT_E15difference_typeES3_S3_St26random_access_iterator_tag
std::iterator_traits<char const*>::difference_type
std::__distance<char const*>(char const*, char const*,
std::random_access_iterator_tag)
version status: incompatible
GLIBCXX_3.4
type: function
status: added

<snip/>


46 missing symbols
0
_ZNSt8numpunctIwEC1EP15__locale_structj
std::numpunct<wchar_t>::numpunct(__locale_struct*, unsigned int)
version status: unversioned
type: function
status: subtracted

1
_ZNSt8messagesIwEC2EP15__locale_structPKcj
std::messages<wchar_t>::messages(__locale_struct*, char const*, unsigned int)
version status: unversioned
type: function
status: subtracted

2
_ZNSt10moneypunctIwLb0EEC2EP15__locale_structPKcj
std::moneypunct<wchar_t, false>::moneypunct(__locale_struct*, char
const*, unsigned int)
version status: unversioned
type: function
status: subtracted

<snip/>

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