From fa0d0c2b963b14fd9c2a0ce5969c0906ead590d7 Mon Sep 17 00:00:00 2001
From: Yury Selivanov <yury@magic.io>
Date: Thu, 7 Jun 2018 20:23:09 -0400
Subject: Fix a crash in map constructor

More details in https://bugs.python.org/issue33803
---
 immutables/_map.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/immutables/_map.c b/immutables/_map.c
index d0a5642..8eedd56 100644
--- a/immutables/_map.c
+++ b/immutables/_map.c
@@ -2455,6 +2455,7 @@ map_alloc(void)
     o->h_weakreflist = NULL;
     o->h_hash = -1;
     o->h_count = 0;
+    o->h_root = NULL;
     PyObject_GC_Track(o);
     return o;
 }
-- 
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