https://issues.dlang.org/show_bug.cgi?id=21690
--- Comment #8 from thomas.bock...@gmail.com --- (In reply to anonymous4 from comment #7) > Calypso and dpp are the only hybrid D/C++ compilers around. I knew about Calypso, but couldn't remember its name. Thanks for reminding me. > I guess, it won't be too difficult to put a null pointer in C++ typeinfo > place as a sentinel. Good idea. If we can confirm by testing that this really turns unsafe dynamic_casts on the C++ side into null pointer exceptions / segmentation faults, then that plus a compile-time error on the D side should mitigate the security and memory safety issues well enough to drop this from "critical" to "enhancement". --