From 2ead3d2448ea3a131df91fed5e88b5e64ee8d4e1 Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Tue, 26 Nov 2013 01:08:53 +0100
Subject: Issue #18874: make it more explicit than set_reentrant() only accept
 0 or 1

---
 Modules/_tracemalloc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Modules/_tracemalloc.c b/Modules/_tracemalloc.c
index 5f45f3d..4d48ee8 100644
--- a/Modules/_tracemalloc.c
+++ b/Modules/_tracemalloc.c
@@ -168,6 +168,7 @@ get_reentrant(void)
 static void
 set_reentrant(int reentrant)
 {
+    assert(reentrant == 0 || reentrant == 1);
     if (reentrant) {
         assert(PyThread_get_key_value(tracemalloc_reentrant_key) == NULL);
         PyThread_set_key_value(tracemalloc_reentrant_key,
-- 
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