test: add cases for known limitations

Author: JohelEGP

regression-tests/pure2-type-and-namespace-aliases.cpp2

@@ -31,9 +31,19 @@ main: () = {
     myfunc2();
 }
 
+myclass5: type == myclass4;
+
 myclass3: @struct type = {
     v0 :== :std::array = (0);;
     v1: std::array == v0;
     v2: myclass3 == :myclass3 = ();;
     v3: _ == v0;
+    // v4 :== v2; // Not (yet) supported.
+    // v5: myclass4 == :myclass4 = ();; // Not yet supported.
+    // v6: myclass5 == :myclass5 = ();; // Not yet supported.
+
+    // There's also a false positive:
+    // <https://github.com/hsutter/cppfront/issues/666#issuecomment-1722329609>.
 }
+
+myclass4: @struct type = { }

regression-tests/test-results/pure2-type-and-namespace-aliases.cpp

@@ -16,10 +16,14 @@ namespace N {
 class myclass;
 
 
-#line 34 "pure2-type-and-namespace-aliases.cpp2"
+#line 36 "pure2-type-and-namespace-aliases.cpp2"
 class myclass3;
 
 
+#line 49 "pure2-type-and-namespace-aliases.cpp2"
+class myclass4;
+
+
 //=== Cpp2 type definitions and function declarations ===========================
 
 
@@ -52,13 +56,23 @@ auto main() -> int;
 
 
 #line 34 "pure2-type-and-namespace-aliases.cpp2"
+using myclass5 = myclass4;
+
 class myclass3 {
     public: static constexpr auto v0 = std::array{0};
     public: static constexpr std::array v1 = v0;
     public: static const myclass3 v2;
     public: static constexpr auto v3 = v0;
+    // v4 :== v2; // Not (yet) supported.
+    // v5: myclass4 == :myclass4 = ();; // Not yet supported.
+    // v6: myclass5 == :myclass5 = ();; // Not yet supported.
+
+    // There's also a false positive:
+    // <https://github.com/hsutter/cppfront/issues/666#issuecomment-1722329609>.
 };
 
+class myclass4 {};
+
 
 //=== Cpp2 function definitions =================================================
 
@@ -86,7 +100,7 @@ auto main() -> int{
     myfunc2();
 }
 
-#line 37 "pure2-type-and-namespace-aliases.cpp2"
+#line 39 "pure2-type-and-namespace-aliases.cpp2"
     inline constexpr myclass3 myclass3::v2 = myclass3{};