From 9728706b1036246952b538bac19ebe30afa9ac80 Mon Sep 17 00:00:00 2001
From: Pieter Hintjens <ph@imatix.com>
Date: Thu, 29 Mar 2012 07:46:46 -0500
Subject: [PATCH] Added optval checking in zmq_ctx_set

---
 src/ctx.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/ctx.cpp b/src/ctx.cpp
index b2dd29af..520d2042 100644
--- a/src/ctx.cpp
+++ b/src/ctx.cpp
@@ -128,13 +128,13 @@ int zmq::ctx_t::terminate ()
 int zmq::ctx_t::set (int option_, int optval_)
 {
     int rc = 0;
-    if (option_ == ZMQ_MAX_SOCKETS) {
+    if (option_ == ZMQ_MAX_SOCKETS && optval_ >= 1) {
         opt_sync.lock ();
         max_sockets = optval_;
         opt_sync.unlock ();
     }
     else
-    if (option_ == ZMQ_IO_THREADS) {
+    if (option_ == ZMQ_IO_THREADS && optval_ >= 0) {
         opt_sync.lock ();
         io_thread_count = optval_;
         opt_sync.unlock ();