Set the recursion limit to 1000 -- 2500 was not enough, let's be
conservative.
diff --git a/Python/ceval.c b/Python/ceval.c
index 63a2479..018c8af 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -300,7 +300,7 @@
 
 /* The interpreter's recursion limit */
 
-static int recursion_limit = 2500;
+static int recursion_limit = 1000;
 
 int Py_GetRecursionLimit()
 {