abi_check has been failing on sparc for a while, looking at the baseline_txt updates it hasn't been updated in a very long time. Therefore I'm pretty sure gcc-4.4 et al. need similar updating.
I'll attach the detailed failure logs from make check that lists all the symbol differences. -- Summary: FAIL: abi_check sparc Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: davem at davemloft dot net GCC build triplet: sparc-unknown-linux-gnu GCC host triplet: sparc-unknown-linux-gnu GCC target triplet: sparc-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43623