From 93cd26e5862744a877594ae0d804b569de227225 Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Sun, 17 Aug 2014 22:11:06 +0200
Subject: Issue #22206: Using pthread, PyThread_create_key() now sets errno to
 ENOMEM and returns -1 (error) on integer overflow.

---
 Python/thread_pthread.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'Python/thread_pthread.h')

diff --git a/Python/thread_pthread.h b/Python/thread_pthread.h
index d9f7c76f2a..27e0dc84bc 100644
--- a/Python/thread_pthread.h
+++ b/Python/thread_pthread.h
@@ -608,7 +608,15 @@ PyThread_create_key(void)
 {
     pthread_key_t key;
     int fail = pthread_key_create(&key, NULL);
-    return fail ? -1 : key;
+    if (fail)
+        return -1;
+    if (key > INT_MAX) {
+        /* Issue #22206: handle integer overflow */
+        pthread_key_delete(key);
+        errno = ENOMEM;
+        return -1;
+    }
+    return (int)key;
 }
 
 void
-- 
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