C++: Add a test of default constructors etc.

cpp/ql/test/library-tests/dataflow/taint-tests/structlikeclass.cpp

@@ -0,0 +1,63 @@
+
+int source();
+void sink(...) {};
+
+class StructLikeClass {
+public:
+	StructLikeClass(int _v = 0) : v(_v) {} // Constructor
+
+	int v;
+};
+
+void test_structlikeclass()
+{
+	{
+		StructLikeClass s1(1);
+		StructLikeClass s2 = 1;
+		StructLikeClass s3(s1);
+		StructLikeClass s4;
+		s4 = 1;
+
+		sink(s1);
+		sink(s2);
+		sink(s3);
+		sink(s4);
+	}
+
+	{
+		StructLikeClass s1(source());
+		StructLikeClass s2 = source();
+		StructLikeClass s3(s1);
+		StructLikeClass s4;
+		s4 = source();
+
+		sink(s1); // tainted [NOT DETECTED]
+		sink(s2); // tainted [NOT DETECTED]
+		sink(s3); // tainted [NOT DETECTED]
+		sink(s4); // tainted [NOT DETECTED]
+	}
+
+	{
+		StructLikeClass s1;
+		StructLikeClass s2 = s1;
+		StructLikeClass s3(s1);
+		StructLikeClass s4;
+		s4 = s1;
+
+		sink(s1);
+		sink(s2);
+		sink(s3);
+		sink(s4);
+	}
+
+	{
+		StructLikeClass s1 = StructLikeClass(source());
+		StructLikeClass s2;
+		StructLikeClass s3;
+		s2 = StructLikeClass(source());
+
+		sink(s1); // tainted [NOT DETECTED]
+		sink(s2); // tainted [NOT DETECTED]
+		sink(s3 = source()); // tainted [NOT DETECTED]
+	}
+}