added tests to check references to struct type.

test/libsolidity/SolidityEndToEndTest.cpp

@@ -4023,9 +4023,96 @@ BOOST_AUTO_TEST_CASE(overwriting_inheritance)
 	BOOST_CHECK(callContractFunction("checkOk()") == encodeArgs(6));
 }
 
+BOOST_AUTO_TEST_CASE(struct_assign_reference_to_struct)
+{
+	char const* sourceCode = R"(
+		contract test {
+			struct testStruct
+			{
+				uint m_value;
+			}
+			testStruct data1;
+			testStruct data2;
+			testStruct data3;
+			function test()
+			{
+				data1.m_value = 2;
+			}
+			function assign() returns (uint ret_local, uint ret_global, uint ret_global3, uint ret_global1)
+			{
+				testStruct x = data1; //x is a reference data1..m_value == 2 as well as x.m_value = 2
+				data2 = data1; // should copy data. data2.m_value == 2
+
+				ret_local = x.m_value; // = 2
+				ret_global = data2.m_value; // = 2
+
+				x.m_value = 3;
+				data3 = x; //should copy the data. data3.m_value == 3
+				ret_global3 = data3.m_value; // = 3
+				ret_global1 = data1.m_value; // =3
+			}
+		}
+	)";
+	compileAndRun(sourceCode, 0, "test");
+	BOOST_CHECK(callContractFunction("assign()") == encodeArgs(2, 2, 3, 3));
+}
+
+BOOST_AUTO_TEST_CASE(struct_delete_member)
+{
+	char const* sourceCode = R"(
+		contract test {
+			struct testStruct
+			{
+				uint m_value;
+			}
+			testStruct data1;
+			function test()
+			{
+				data1.m_value = 2;
+			}
+			function deleteMember() returns (uint ret_value)
+			{
+				testStruct x = data1; //should not copy the data. data1.m_value == 2 but x.m_value = 0
+				x.m_value = 4;
+				delete x.m_value;
+				ret_value = x.m_value;
+			}
+		}
+	)";
+	compileAndRun(sourceCode, 0, "test");
+	auto res = callContractFunction("deleteMember()");
+	BOOST_CHECK(callContractFunction("deleteMember()") == encodeArgs(0));
+}
+
+BOOST_AUTO_TEST_CASE(struct_delete_struct_in_mapping)
+{
+	char const* sourceCode = R"(
+		contract test {
+			struct testStruct
+			{
+				uint m_value;
+			}
+			mapping (uint => testStruct) campaigns;
+
+			function test()
+			{
+				campaigns[0].m_value = 2;
+			}
+			function deleteIt() returns (uint)
+			{
+				delete campaigns[0];
+				return campaigns[0].m_value;
+			}
+		}
+	)";
+	compileAndRun(sourceCode, 0, "test");
+	auto res = callContractFunction("deleteIt()");
+	BOOST_CHECK(callContractFunction("deleteIt()") == encodeArgs(0));
+}
 
 BOOST_AUTO_TEST_SUITE_END()
 
 }
 }
 } // end namespaces
+