Emscripten malloc and free across JS and C++

Question

Suppose I allocate some memory M in Javascript via Emscripten _malloc (Javascript). Am I allowed to pass ownership of M into a marshaled C++ function that calls free (C++) on it?

Answer 1

Yes. In Emscripten, the C++ version of malloc is converted to Module._malloc() in JavaScript; likewise Module._free() is the same as C++'s free().