Merge branch 'master' into rdmarsh/cpp/ir-flow-through-outparams

cpp/ql/test/library-tests/dataflow/DefaultTaintTracking/defaulttainttracking.cpp

@@ -79,6 +79,15 @@ void test_dynamic_cast() {
     dynamic_cast<D3*>(b2)->f(getenv("VAR")); // tainted [FALSE POSITIVE]
 }
 
+namespace std {
+  template< class T >
+  T&& move( T&& t ) noexcept;
+}
+
+void test_std_move() {
+  sink(std::move(getenv("VAR")));
+}
+
 void flow_to_outparam(char ** ret, char *arg) {
     *ret = arg; 
 }