From 9fb11fc8f2c770e1d6261baf050a2f6c0ce690ee Mon Sep 17 00:00:00 2001
From: jackpoz <giacomopoz@gmail.com>
Date: Fri, 27 Apr 2018 21:25:14 +0200
Subject: Dep/Boost: Fix crash in Boost

Work around a NULL dereference exception happening in boost::asio::ip::tcp::resolver::results_type, resulting in a crash when trying to bind on an address that cannot be resolved.
Fixes #21884
---
 src/common/Asio/Resolver.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/common/Asio/Resolver.h b/src/common/Asio/Resolver.h
index 5106421ee5e..953913442c8 100644
--- a/src/common/Asio/Resolver.h
+++ b/src/common/Asio/Resolver.h
@@ -32,7 +32,7 @@ namespace Trinity
             boost::system::error_code ec;
 #if BOOST_VERSION >= 106600
             boost::asio::ip::tcp::resolver::results_type results = resolver.resolve(protocol, host, service, ec);
-            if (results.empty() || ec)
+            if (results.begin() == results.end() || ec)
                 return {};
 
             return results.begin()->endpoint();
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