From 45fcd47c07fa9c761f61fe346f32b2164fd808c1 Mon Sep 17 00:00:00 2001
From: Jeffrey Walton <noloader@gmail.com>
Date: Tue, 10 Jul 2018 11:37:21 -0400
Subject: [PATCH] Clear conversion warning

---
 datatest.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/datatest.cpp b/datatest.cpp
index 61ccbe79..afec7d20 100644
--- a/datatest.cpp
+++ b/datatest.cpp
@@ -529,7 +529,7 @@ void TestSymmetricCipher(TestData &v, const NameValuePairs &overrideParameters)
 			ciphertextXorDigest = GetDecodedDatum(v, "CiphertextXorDigest");
 			xorDigest.append(encrypted, 0, 64);
 			for (size_t i=64; i<encrypted.size(); i++)
-				xorDigest[i%64] ^= encrypted[i];
+				xorDigest[i%64] = static_cast<char>(xorDigest[i%64] ^ encrypted[i]);
 		}
 		if (test != "EncryptXorDigest" ? encrypted != ciphertext : xorDigest != ciphertextXorDigest)
 		{
@@ -556,6 +556,8 @@ void TestSymmetricCipher(TestData &v, const NameValuePairs &overrideParameters)
 			std::cout << "\n";
 			SignalTestFailure();
 		}
+
+		encrypted.clear(); decrypted.clear();
 	}
 	else
 	{