http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51318
--- Comment #3 from Marc Glisse <marc.glisse at normalesup dot org> 2011-12-01 21:42:35 UTC --- (In reply to comment #2) > Marc, do you have a feeling PR51384 is a duplicate? At least I produced this testcase starting from the one-liner: #include <Eigen/Dense> that made g++ segfault and applying delta. So yes, I'd say it's a dup (although there could in principle be several g++ bugs and delta would highlight one that may not be the one giving the backtrace in PR51384).