* Fixes segfault caused in the Object.getParent function.

Found by Jonathan Thambidurai
* Fixes a scriptlink problem when a script is run using ALT-p.
  Found by Yann Vernier (LoneTech)
* Prints unhandled exceptions. Should fix some memory leaks too.
  Fixed by Yann Verniet (LoneTech)

source/blender/python/BPY_interface.c

@@ -240,6 +240,8 @@ struct _object *BPY_txt_do_python(struct SpaceText* st)
   else
     dict = PyModule_GetDict(PyImport_AddModule("__main__"));
 
+  clearScriptLinks ();
+
   ret = RunPython (st->text, dict); /* Run the script */
 
   if (!ret) { /* Failed execution of the script */
@@ -353,6 +355,7 @@ void BPY_do_pyscript(struct ID *id, short event)
   ScriptLink  * scriptlink;
   int           index;
   PyObject    * dict;
+  PyObject    * ret;
 
   printf ("In BPY_do_pyscript(id=%s, event=%d)\n",id->name, event);
 
@@ -368,8 +371,19 @@ void BPY_do_pyscript(struct ID *id, short event)
         (scriptlink->scripts[index] != NULL))
     {
       dict = CreateGlobalDictionary();
-      RunPython ((Text*) scriptlink->scripts[index], dict);
+      ret = RunPython ((Text*) scriptlink->scripts[index], dict);
       ReleaseGlobalDictionary (dict);
+      if (!ret)
+      {
+          /* Failed execution of the script */
+          BPY_Err_Handle ((Text*) scriptlink->scripts[index]);
+          BPY_end_python ();
+          BPY_start_python ();
+      }
+      else
+      {
+          Py_DECREF (ret);
+      }
     }
   }
 

source/blender/python/api2_2x/EXPP_interface.c

@@ -54,6 +54,17 @@ void initBlenderApi2_2x (void)
   M_Blender_Init ();
 }
 
+void clearScriptLinks (void)
+{
+    Py_INCREF (Py_False);
+    PyDict_SetItemString (g_blenderdict, "bylink", Py_False);
+    /* Old API meant link could be unset. Or even valid when bylink is false.
+     * This way, you can import it and check its value afterwards, ignoring
+     * bylink. */
+    Py_INCREF (Py_None);
+    PyDict_SetItemString (g_blenderdict, "link", Py_None);
+}
+
 ScriptLink * setScriptLinks(ID *id, short event)
 {
   ScriptLink  * scriptlink;

source/blender/python/api2_2x/EXPP_interface.h

@@ -32,4 +32,5 @@
 #include <DNA_ID.h>
 
 void initBlenderApi2_2x (void);
+void clearScriptLinks (void);
 ScriptLink * setScriptLinks(ID *id, short event);

source/blender/python/api2_2x/Object.c

@@ -400,6 +400,7 @@ PyObject *M_Object_Get(PyObject *self, PyObject *args)
         }
         blen_object = (C_Object*)PyObject_NEW (C_Object, &Object_Type); 
         blen_object->object = object;
+        blen_object->parent = NULL;
         blen_object->data = NULL;
 
         return ((PyObject*)blen_object);
@@ -708,7 +709,10 @@ static PyObject *Object_getParent (C_Object *self)
         return ((PyObject*)self->parent);
     }
 
-    /* TODO: what if self->object->parent==NULL? Should we return Py_None? */
+    if (self->object->parent == NULL)
+    {
+        return (EXPP_incr_ret (Py_None));
+    }
     attr = M_ObjectCreatePyObject (self->object->parent);
 
     if (attr)