https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66701
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- But this isn't the place to propose changes to the ABI, because it's used by several different compilers and if G++ started emitting a call to a different version of __cxa_pure_virtual that would break compatibility with other compilers using the same ABI. So this is not something that can be added to GCC unless it is first added to the ABI.