diff -r b3d0bf112f70 Python/pythonrun.c
--- a/Python/pythonrun.c	Sun Jul 26 09:01:22 2015 +0300
+++ b/Python/pythonrun.c	Sun Jul 26 16:46:55 2015 +0200
@@ -2642,8 +2642,12 @@
         return;
 
 display_stack:
+#ifdef WITH_THREAD
     /* PyGILState_GetThisThreadState() works even if the GIL was released */
     tstate = PyGILState_GetThisThreadState();
+#else
+    tstate = PyThreadState_GET();
+#endif
     if (tstate == NULL) {
         /* _Py_DumpTracebackThreads() requires the thread state to display
          * frames */