@@ -57,5 +57,20 @@ public void TestExec()
             object c = locals.GetItem("c").AsManagedObject(typeof(int));
             Assert.AreEqual(111, c);
         }
+
+        [Test]
+        public void TestExec2()
+        {
+            string code = @"
+class Test1():
+   pass
+
+class Test2():
+   def __init__(self):
+       Test1()
+
+Test2()";
+            PythonEngine.Exec(code);
+        }
     }
 }
@@ -496,12 +496,10 @@ internal static PyObject RunString(string code, IntPtr? globals, IntPtr? locals,
                     borrowedGlobals = false;
                 }
             }
-
-            var borrowedLocals = true;
+            
             if (locals == null)
             {
-                locals = Runtime.PyDict_New();
-                borrowedLocals = false;
+                locals = globals;
             }
 
             try
@@ -516,10 +514,6 @@ internal static PyObject RunString(string code, IntPtr? globals, IntPtr? locals,
             }
             finally
             {
-                if (!borrowedLocals)
-                {
-                    Runtime.XDecref(locals.Value);
-                }
                 if (!borrowedGlobals)
                 {
                     Runtime.XDecref(globals.Value);
Original file line number	Diff line number	Diff line change
@@ -496,12 +496,10 @@ internal static PyObject RunString(string code, IntPtr? globals, IntPtr? locals,
496	496	borrowedGlobals = false;
497	497	}
498	498	}
499		-
500		- var borrowedLocals = true;
	499	+
501	500	if (locals == null)
502	501	{
503		- locals = Runtime.PyDict_New();
504		- borrowedLocals = false;
	502	+ locals = globals;
505	503	}
506	504
507	505	try
@@ -516,10 +514,6 @@ internal static PyObject RunString(string code, IntPtr? globals, IntPtr? locals,
516	514	}
517	515	finally
518	516	{
519		- if (!borrowedLocals)
520		- {
521		- Runtime.XDecref(locals.Value);
522		- }
523	517	if (!borrowedGlobals)
524	518	{
525	519	Runtime.XDecref(globals.Value);