To expand on not great: RTTI is one of the few features of C++ where you pay for it even if you don't use it, so it's not all that popular. It can be disabled w

To expand on not great: RTTI is one of the few features of C++ where you pay for it even if you don't use it, so it's not all that popular. It can be disabled with compiler flags to shrink the binary. LLVM's coding standard prohibits use of RTTI, they instead use their own 'hand-rolled' solution. [0] RTTI is also banned by the Google C++ coding standard. [1] [0] https://llvm.org/docs/CodingStandards.html#do-not-use-rtti-or-exceptions https://llvm.org/docs/CodingStandards.html#do-not-use-rtti-o... [1] https://google.github.io/styleguide/cppguide.html#Run-Time_Type_Information__RTTI_ https://google.github.io/styleguide/cppguide.html#Run-Time_T...