py: Wrap all obj-ptr conversions in MP_OBJ_TO_PTR/MP_OBJ_FROM_PTR.

This allows the mp_obj_t type to be configured to something other than a
pointer-sized primitive type.

This patch also includes additional changes to allow the code to compile
when sizeof(mp_uint_t) != sizeof(void*), such as using size_t instead of
mp_uint_t, and various casts.

1 files changed, 1 insertions, 1 deletions

diff --git a/extmod/modujson.c b/extmod/modujson.c
index 68ed264714..4e080c9756 100644
--- a/extmod/modujson.c
+++ b/extmod/modujson.c
@@ -222,7 +222,7 @@ STATIC mp_obj_t mod_ujson_loads(mp_obj_t obj) {
                     mp_obj_list_init(&stack, 1);
                     stack.items[0] = stack_top;
                 } else {
-                    mp_obj_list_append(&stack, stack_top);
+                    mp_obj_list_append(MP_OBJ_FROM_PTR(&stack), stack_top);
                 }
                 stack_top = next;
                 stack_top_type = mp_obj_get_type(stack_top);