Store copied assembly items in test. Fixes OSX issues.

test/libsolidity/SolidityOptimizer.cpp

@@ -97,7 +97,7 @@ public:
 	{
 		eth::KnownState state;
 		for (auto const& item: addDummyLocations(_input))
-			state.feedItem(item);
+			state.feedItem(item, true);
 		return state;
 	}
 
@@ -884,21 +884,18 @@ BOOST_AUTO_TEST_CASE(cse_sha3_twice_same_content_noninterfering_store_in_between
 	BOOST_CHECK_EQUAL(1, count(output.begin(), output.end(), AssemblyItem(Instruction::SHA3)));
 }
 
-// ******************************
-// DISABLED DUE TO FAILURE ON OSX
-// ******************************
-//BOOST_AUTO_TEST_CASE(cse_with_initially_known_stack)
-//{
-//	eth::KnownState state = createInitialState(AssemblyItems{
-//		u256(0x12),
-//		u256(0x20),
-//		Instruction::ADD
-//	});
-//	AssemblyItems input{
-//		u256(0x12 + 0x20)
-//	};
-//	checkCSE(input, AssemblyItems{Instruction::DUP1}, state);
-//}
+BOOST_AUTO_TEST_CASE(cse_with_initially_known_stack)
+{
+	eth::KnownState state = createInitialState(AssemblyItems{
+		u256(0x12),
+		u256(0x20),
+		Instruction::ADD
+	});
+	AssemblyItems input{
+		u256(0x12 + 0x20)
+	};
+	checkCSE(input, AssemblyItems{Instruction::DUP1}, state);
+}
 
 BOOST_AUTO_TEST_CASE(cse_equality_on_initially_known_stack)
 {