From 3683341aa99ba894765447612c7f9079680beb31 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Sun, 18 Feb 2018 15:21:37 -0800
Subject: [PATCH] ircd::util: Ensure null termination after all direct writes
 into string.

---
 include/ircd/util/util.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/include/ircd/util/util.h b/include/ircd/util/util.h
index 1b09b3ffa..060007604 100644
--- a/include/ircd/util/util.h
+++ b/include/ircd/util/util.h
@@ -174,7 +174,14 @@ string(const size_t &size,
 		const_cast<char *>(ret.data()), ret.size()
 	};
 
-	ret.resize(closure(buf));
+	const size_t consumed
+	{
+		closure(buf)
+	};
+
+	assert(consumed <= buffer::size(buf));
+	data(buf)[consumed] = '\0';
+	ret.resize(consumed);
 	return ret;
 }