What, if any, validation of their input should the register access functions in the extension API do? Currently, they don't do any, which means that you can create a buffer overflow simply by using a register number >31 or <0; eg, Parrot_set_intreg(interpreter, 100000000, 100);
reliably segfaults on my machine. Is it the responsibility of the extension writer to do this kind of bounds checking (in which case we need to make this extremely plain in the documentation), or should Parrot do this itself? Simon
