From a7bc4d1a1455a8a5cdea53d7a2caf03c9320f460 Mon Sep 17 00:00:00 2001
From: Léa Saviot
Date: Fri, 22 Nov 2019 14:06:49 +0100
Subject: py/builtinimport: Raise exception on empty module name.

To prevent a crash returning MP_OBJ_NULL.  A test is added for this case.
---
 py/builtinimport.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'py')

diff --git a/py/builtinimport.c b/py/builtinimport.c
index b9f6c2ab2..9d91b2059 100644
--- a/py/builtinimport.c
+++ b/py/builtinimport.c
@@ -334,6 +334,10 @@ mp_obj_t mp_builtin___import__(size_t n_args, const mp_obj_t *args) {
         mod_len = new_mod_l;
     }
 
+    if (mod_len == 0) {
+        mp_raise_ValueError(NULL);
+    }
+
     // check if module already exists
     qstr module_name_qstr = mp_obj_str_get_qstr(module_name);
     mp_obj_t module_obj = mp_module_get(module_name_qstr);
-- 
cgit v1.2.3