modffi: Support void (None) return value for Python callback functions.

10 years ago · 0078561303
1 changed files with 3 additions and 1 deletions
--- a/unix/modffi.c
+++ b/unix/modffi.c
@ -211,7 +211,9 @@ STATIC void call_py_func(ffi_cif *cif, void *ret, void** args, mp_obj_t func) {
    }
    mp_obj_t res = mp_call_function_n_kw(func, cif->nargs, 0, pyargs);

-    *(ffi_arg*)ret = mp_obj_int_get_truncated(res);
+    if (res != mp_const_none) {
+        *(ffi_arg*)ret = mp_obj_int_get_truncated(res);
+    }
 }

 STATIC mp_obj_t mod_ffi_callback(mp_obj_t rettype_in, mp_obj_t func_in, mp_obj_t paramtypes_in) {