py/objarray: Disallow slice-assignment to read-only memoryview.

Also comes with a test for this. Fixes issue #2904.
2017-02-27 16:09:57 +11:00
parent 23ccb3e12e
commit f4a12dca58
2 changed files with 8 additions and 0 deletions
--- a/py/objarray.c
+++ b/py/objarray.c
@@ -418,6 +418,10 @@ STATIC mp_obj_t array_subscr(mp_obj_t self_in, mp_obj_t index_in, mp_obj_t value
                uint8_t* dest_items = o->items;
                #if MICROPY_PY_BUILTINS_MEMORYVIEW
                if (o->base.type == &mp_type_memoryview) {
+                    if ((o->typecode & 0x80) == 0) {
+                        // store to read-only memoryview not allowed
+                        return MP_OBJ_NULL;
+                    }
                    if (len_adj != 0) {
                        goto compat_error;
                    }