diff -r 4accc35cbfcf Modules/_sre.c
--- a/Modules/_sre.c	Tue Mar 17 10:49:17 2015 +0100
+++ b/Modules/_sre.c	Tue Mar 17 20:31:00 2015 +0200
@@ -280,6 +280,18 @@ sre_getlower(PyObject* self, PyObject* a
 }
 
 LOCAL(void)
+state_clean_repeat_data(SRE_STATE* state)
+{
+    SRE_REPEAT *rep = state->repeat;
+    state->repeat = NULL;
+    while (rep) {
+        SRE_REPEAT *prev = rep->prev;
+        PyObject_FREE(rep);
+        rep = prev;
+    }
+}
+
+LOCAL(void)
 state_reset(SRE_STATE* state)
 {
     /* FIXME: dynamic! */
@@ -288,8 +300,7 @@ state_reset(SRE_STATE* state)
     state->lastmark = -1;
     state->lastindex = -1;
 
-    state->repeat = NULL;
-
+    state_clean_repeat_data(state);
     data_stack_dealloc(state);
 }
 
@@ -420,6 +431,7 @@ state_fini(SRE_STATE* state)
     if (state->buffer.buf)
         PyBuffer_Release(&state->buffer);
     Py_XDECREF(state->string);
+    state_clean_repeat_data(state);
     data_stack_dealloc(state);
     PyMem_Del(state->mark);
     state->mark = NULL;