Well, ld.so already does this, and it's no big deal. The Python interpreter also does this when executing a .py script (code is code, whether it's machine-readable or human-readable).

In any case, we take testing very seriously—every glibc shim we've written is covered with tests, and we run our loader against 1000 of the most popular Debian packages. The project has 100% code coverage. Perhaps, if I have the time, I'll also do some fuzzing on this thing.