fix

include/pocketpy/objects/object.h

@@ -6,7 +6,7 @@
 typedef struct PyObject {
     py_Type type;  // we have a duplicated type here for convenience
     uint8_t size_8b;
-    uint8_t gc_marked;  // lsb (self is marked), 2nd lsb (ignore children)
+    uint8_t gc_marked;  // lsb (self is marked), 2nd lsb (no recursively mark)
     int slots;          // number of slots in the object
     char flex[];
 } PyObject;

src/modules/gc.c

@@ -54,7 +54,7 @@ static bool gc_is_tracked(int argc, py_Ref argv) {
         py_newbool(py_retval(), false);
         return true;
     }
-    bool res = argv->_obj->gc_marked &= 0b10;
+    bool res = argv->_obj->gc_marked & 0b10;
     py_newbool(py_retval(), res);
     return true;
 }