Use insert rather than emplace - emplace isn't used elsewhere and I'm not sure windows supports it.

libethereum/AddressState.h

@@ -46,7 +46,7 @@ public:
 		{
 			auto mFinder = m_memory.find((u256)i);
 			if (mFinder == m_memory.end())
-				m_memory.emplace((u256)i,_memory[i]);
+				m_memory.insert(std::pair<u256,u256>((u256)i,_memory[i]));
 			else
 				mFinder->second = _memory[i];
 		}

libethereum/State.cpp

@@ -1172,7 +1172,7 @@ void State::execute(Address _myAddress, Address _txSender, u256 _txValue, u256s
 			require(2);
 			auto mFinder = tempMem.find(stack.back());
 			if (mFinder == tempMem.end())
-				tempMem.emplace(stack.back(), stack[stack.size() - 2]);
+				tempMem.insert(std::pair<u256,u256>(stack.back(), stack[stack.size() - 2]));
 			else
 				mFinder->second = stack[stack.size() - 2];
 			stack.pop_back();

libethereum/State.h

@@ -274,7 +274,7 @@ inline std::ostream& operator<<(std::ostream& _out, State const& _s)
 					_out << std::endl << "    [" << j.first << ":" << asHex(j.second) << "]";
 					auto mFinder = mem.find(j.first);
 					if (mFinder == mem.end())
-						mem.emplace(j.first, RLP(j.second).toInt<u256>());
+						mem.insert(std::pair<u256,u256>(j.first, RLP(j.second).toInt<u256>()));
 					else
 						mFinder->second = RLP(j.second).toInt<u256>();
 				}
@@ -307,7 +307,7 @@ inline std::ostream& operator<<(std::ostream& _out, State const& _s)
 						_out << std::endl << "    [" << j.first << ":" << asHex(j.second) << "]";
 						auto mFinder = mem.find(j.first);
 						if (mFinder == mem.end())
-							mem.emplace(j.first, RLP(j.second).toInt<u256>());
+							mem.insert(std::pair<u256,u256>(j.first, RLP(j.second).toInt<u256>()));
 						else
 							mFinder->second = RLP(j.second).toInt<u256>();
 					}