From 74fc993b98a98f57d257d2150b0a915b47356490 Mon Sep 17 00:00:00 2001
From: Robert Ransom <rransom.8774@gmail.com>
Date: Thu, 3 Mar 2011 16:17:39 -0800
Subject: [PATCH] Check the result of SSL_set_ex_data

Reported by piebeer.
---
 src/common/tortls.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/common/tortls.c b/src/common/tortls.c
index 905ecbb708..01d3e2a314 100644
--- a/src/common/tortls.c
+++ b/src/common/tortls.c
@@ -1065,7 +1065,14 @@ tor_tls_new(int sock, int isServer)
     tor_free(result);
     return NULL;
   }
-  SSL_set_ex_data(result->ssl, tor_tls_object_ex_data_index, result);
+  {
+    int set_worked =
+      SSL_set_ex_data(result->ssl, tor_tls_object_ex_data_index, result);
+    if (!set_worked) {
+      log_warn(LD_BUG,
+               "Couldn't set the tls for an SSL*; connection will fail");
+    }
+  }
   SSL_set_bio(result->ssl, bio, bio);
   tor_tls_context_incref(context);
   result->context = context;