> Are there known changes in the C++ ABI by gcc-4.1.3, > or an incompatible change to libstdc++ (which would > suggest a major version bump)? The GCC people are careful to keep the ABI/libraries stable on the release branches, and there are AFAIK no ABI issues reported in the gcc bugzilla. So I would guess something happened during our import... FYI, i do not have time to debug this issue. someone else will have to. good thing i had had problems getting this ready for netbsd-4...