From be62f618372e41005dfe4612f102b1aeb1935939 Mon Sep 17 00:00:00 2001
From: Lefteris Karapetsas <lefteris@refu.co>
Date: Tue, 19 May 2015 16:55:43 +0200
Subject: [PATCH] Test for issue #1977

Test that reproduces issue #1977 and will fail on ArchLinux with
Boost version: 1.58.0-1
gcc version: 4.9.2-4
---
 test/libevm/vm.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/test/libevm/vm.cpp b/test/libevm/vm.cpp
index 7b589d238..9f790501d 100644
--- a/test/libevm/vm.cpp
+++ b/test/libevm/vm.cpp
@@ -438,6 +438,15 @@ void doVMTests(json_spirit::mValue& v, bool _fillin)
 
 BOOST_AUTO_TEST_SUITE(VMTests)
 
+// test that reproduces issue https://github.com/ethereum/cpp-ethereum/issues/1977
+BOOST_AUTO_TEST_CASE(u256_overflow_test)
+{
+	dev::u256 a = 14;
+	dev::bigint b = dev::bigint("115792089237316195423570985008687907853269984665640564039457584007913129639948");
+	// to fix cast `a` to dev::bigint
+	BOOST_CHECK(a < b);
+}
+
 BOOST_AUTO_TEST_CASE(vmtests)
 {
 	dev::test::executeTests("vmtests", "/VMTests",dev::test::getFolder(__FILE__) + "/VMTestsFiller", dev::test::doVMTests);