backporting gcc 4.7 to squeeze

I'm trying to backport gcc 4.7 to squeeze. The missing build dependency I have is a sufficiently recent binutils. I built 2.22-2 from testing. My question is whether it is safe to install it on a squeeze machine. Will it break anything? Alternatively, is it possible to get around the require

gcc-4.6_4.6.2-10_amd64.changes ACCEPTED into unstable

Accepted: cpp-4.6_4.6.2-10_amd64.deb to main/g/gcc-4.6/cpp-4.6_4.6.2-10_amd64.deb fixincludes_4.6.2-10_amd64.deb to main/g/gcc-4.6/fixincludes_4.6.2-10_amd64.deb g++-4.6-multilib_4.6.2-10_amd64.deb to main/g/gcc-4.6/g++-4.6-multilib_4.6.2-10_amd64.deb g++-4.6_4.6.2-10_amd64.deb to main/g

Processing of gcc-4.6_4.6.2-10_amd64.changes

gcc-4.6_4.6.2-10_amd64.changes uploaded successfully to localhost along with the files: gcc-4.6_4.6.2-10.dsc gcc-4.6_4.6.2-10.diff.gz gcc-4.6-source_4.6.2-10_all.deb libstdc++6-4.6-doc_4.6.2-10_all.deb gcc-4.6-locales_4.6.2-10_all.deb gcc-4.6-base_4.6.2-10_amd64.deb libgcc1_4.6.2-10_a

Bug#654579: gcj-4.6-jre-headless: Wrong install path for .java-gcj-4.6.jinfo

Package: gcj-4.6-jre-headless Version: 4.6.2-2 Severity: important hi, for some reason .java-gcj-4.6.jinfo is installed in inproper location: /usr/lib/jvm/java-1.5.0-gcj-4.6/.java-gcj-4.6.jinfo This breaks update-java-alternatives behavior Thanks -- System Information: Debian Release: 6