[Bug c++/68711] [5 regression] SEGV on an invalid offsetof of a member of a virtual base

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68711

--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch posted for review:
https://gcc.gnu.org/ml/gcc-patches/2015-12/msg00662.html