From b385529ddfcd5e46890438dc32c6dba341e039b0 Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <python@rcn.com>
Date: Sun, 7 Jul 2013 02:07:23 -1000
Subject: Fix #ifdef

---
 Modules/_collectionsmodule.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Modules/_collectionsmodule.c b/Modules/_collectionsmodule.c
index 2b42e0a..9924b63 100644
--- a/Modules/_collectionsmodule.c
+++ b/Modules/_collectionsmodule.c
@@ -61,7 +61,7 @@ typedef struct BLOCK {
  * block is freed leaving another existing block as the new endpoint.
  */
 
-#if Py_DEBUG
+#ifdef Py_DEBUG
 #define MARK_END(link)  link = NULL;
 #define CHECK_END(link) assert(link == NULL);
 #define CHECK_NOT_END(link) assert(link != NULL);
-- 
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