> is the cl feature "SEH-Exceptions as C++-Exceptions" (compile switch /EHa) also on your list? That's a good question. I think the answer is "not exactly." There was some discussion of this previously. You can find it in this thread: https://groups.google.com/d/msg/llvm-dev/ebIj2PJiIEs/rTq9684oglIJ beginning with the responses on December 2. -Andy