Has anyone checked how C pointers work when it is compiled(Emscripten) to WASM file in WebAssembly ?

I know this is more of a question. But there is no much discussion or clarity on this. OR atleast i was unable to find. I have a question for the same in stackoverflow with absolutely no answers or even comments https://stackoverflow.com/questions/64447082/how-to-use-c-compiled-wasm-functions-in-js-pointer-logic-do-not-work-as-expect