From 1338050380c9ccc2383834e6a29aeeea7c5a4233 Mon Sep 17 00:00:00 2001
From: "A. Jesse Jiryu Davis" <jesse@mongodb.com>
Date: Fri, 27 Sep 2013 11:17:36 -0400
Subject: [PATCH] Use PyInterpreterState_Next instead of interp->next.

---
 bson/_cbsonmodule.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/bson/_cbsonmodule.c b/bson/_cbsonmodule.c
index fda8a0cf3..fbce02d46 100644
--- a/bson/_cbsonmodule.c
+++ b/bson/_cbsonmodule.c
@@ -281,8 +281,10 @@ _in_main_interpreter(void) {
 
     if (main_interpreter == NULL) {
         interpreter = PyInterpreterState_Head();
-        while (interpreter->next)
-            interpreter = interpreter->next;
+
+        while (PyInterpreterState_Next(interpreter))
+            interpreter = PyInterpreterState_Next(interpreter);
+
         main_interpreter = interpreter;
     }