mp_obj_is_callable(): Only object types can be callable.

Fixes segfault on callable("string").

2 files changed, 6 insertions, 1 deletions

diff --git a/py/obj.c b/py/obj.c
index c2f726bb99..660df4dfa1 100644
--- a/py/obj.c
+++ b/py/obj.c
@@ -66,7 +66,7 @@ void mp_obj_print_exception(mp_obj_t exc) {
 }
 
 bool mp_obj_is_callable(mp_obj_t o_in) {
-    if (MP_OBJ_IS_SMALL_INT(o_in)) {
+    if (!MP_OBJ_IS_OBJ(o_in)) {
         return false;
     } else {
         mp_obj_base_t *o = o_in;
diff --git a/tests/basics/builtin-callable.py b/tests/basics/builtin-callable.py
new file mode 100644
index 0000000000..caddb885cf
--- /dev/null
+++ b/tests/basics/builtin-callable.py
@@ -0,0 +1,5 @@
+import sys
+print(callable(1))
+print(callable("dfsd"))
+print(callable(callable))
+print(callable(sys))