Mocked up a quick PoC to test whether LLVM's ubsan would work with Emscripten.
You can find it here: https://gist.github.com/hackcasual/7de2f357714505061506df01923f99cd Compile and run like so: c:\dev>em++ testub.cc -fsanitize=signed-integer-overflow && node a.out.js Overflow happened 2147483647 + 1 @testub.cc em++ doesn't seem to hook up the ubsan library, and a cursory investigation of it in the LLVM source leads me to believe it might be challenging to get working with Emscripten. Turning it on for my large, private code base (~10MB js for the test suite) showed less than 10 methods needing to be defined, so it's probably easier to re-implement the runtime library specifically for emscripten. This would also allow for stuff like debugger on UB, or printing Javascript stack traces. For full ubsan support, the JSBackend would need to implement the @llvm.objectsize intrinsic, but I believe only -fsanitize=object-size depends on it. -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to emscripten-discuss+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
