According to GCC 4.0 as the default GCC / C++ ABI change, I rebuild hex, which doesn't depend on any other C++ library besides libstdc++, and upload it.

I have one more package needed to be rebuilt.

% aptitude search '~Dlibstdc++~mukai'
p   hex                             - hexadecimal dumping tool for Japanese
i   libqdbm2++                      - QDBM Database Libraries for C++ [runtime]

libqdbm2++ also doesn't depend on any other C++ libraries besides libstdc++. I'll rebuild qdbm tomorrow.