C++: Add a test case.

Author: geoffw0

cpp/ql/test/library-tests/functions/functions/Functions1.expected

@@ -27,3 +27,7 @@
 | functions.cpp:38:2:38:8 | MyClass | MyClass | const MyClass & from | declaration:functions.cpp:38:2:38:8 |
 | functions.cpp:39:2:39:8 | MyClass | MyClass | MyClass && from | declaration:functions.cpp:39:2:39:8 |
 | functions.cpp:40:2:40:13 | operator int | operator int |  | declaration:functions.cpp:40:2:40:13 |
+| functions.cpp:43:6:43:6 | h | h | int x | TopLevelFunction, declaration:functions.cpp:43:6:43:6, declaration:functions.cpp:44:6:44:6, isTopLevel |
+| functions.cpp:43:6:43:6 | h | h | int y | TopLevelFunction, declaration:functions.cpp:43:6:43:6, declaration:functions.cpp:44:6:44:6, isTopLevel |
+| functions.cpp:44:6:44:6 | h | h | int x | TopLevelFunction, declaration:functions.cpp:43:6:43:6, declaration:functions.cpp:44:6:44:6, isTopLevel |
+| functions.cpp:44:6:44:6 | h | h | int y | TopLevelFunction, declaration:functions.cpp:43:6:43:6, declaration:functions.cpp:44:6:44:6, isTopLevel |

cpp/ql/test/library-tests/functions/functions/functions.cpp

@@ -39,3 +39,6 @@ class MyClass
 	MyClass(MyClass &&from);
 	operator int();
 };
+
+void h(int x);
+void h(int y);