I'm not really sure how to explain this one, so I'll let the attached reduced test case do the talking. The same code compiles fine on the same machine running g++-4.1.2-20061115 (Debian prerelease 4.1.1-21)
Output of `g++ -v`: Reading specs from /usr/lib/gcc/i486-linux-gnu/3.4.6/specs Configured with: ../src/configure -v --enable-languages=c,c++,f77,pascal --prefix=/usr --libexecdir=/usr/lib --with-gxx-include-dir=/usr/include/c++/3.4 --enable-shared --with-system-zlib --enable-nls --without-included-gettext --program-suffix=-3.4 --enable-__cxa_atexit --enable-clocale=gnu --enable-libstdcxx-debug --with-tune=i686 i486-linux-gnu Thread model: posix gcc version 3.4.6 (Debian 3.4.6-5) -- Summary: [3.4] ICE on templated class with statically sized array computed from static const member Product: gcc Version: 3.4.6 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dweatherford at facebook dot com GCC build triplet: i486-linux-gnu GCC host triplet: i486-linux-gnu GCC target triplet: i486-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34298