This seems to be a known and fixed issue: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67870
Can this fix migrate back to the 4.9 branch? Thanks ** Bug watch added: GCC Bugzilla #67870 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67870 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1830506 Title: internal compiler error: in type_throw_all_p, at cp/except.c:1307 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-4.9/+bug/1830506/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs