[vala/0.48] codegen: Drop confusing warning when accessing interface members

[Rico Tzschichholz <ricotz src gnome org>]

commit 2f4d4921955b0d0cbd8b193248935707c27840b8
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Tue Mar 8 22:54:09 2022 +0100

    codegen: Drop confusing warning when accessing interface members
    
    Making assumptions for member access using the current class is not correct.
    
    Introduced by 0aace7bd6d3ec72e77f4eabbb7d5fffd3b2e86a8

 codegen/valaccodebasemodule.vala                 |  4 ----
 tests/Makefile.am                                |  1 +
 tests/objects/interface-parameter-nowrapper.vala | 20 ++++++++++++++++++++
 3 files changed, 21 insertions(+), 4 deletions(-)
---
diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index 94a31b3f5..4c7e0f73c 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -2487,10 +2487,6 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
                        return new CCodeIdentifier ("%s_%s_parent_iface".printf (get_ccode_lower_case_name 
(current_class), get_ccode_lower_case_name (iface)));
                }
 
-               if (!current_class.is_a (iface)) {
-                       Report.warning (current_class.source_reference, "internal: `%s' is not a `%s'".printf 
(current_class.get_full_name (), iface.get_full_name ()));
-               }
-
                var vcast = new CCodeFunctionCall (new CCodeIdentifier ("G_TYPE_INSTANCE_GET_INTERFACE"));
                vcast.add_argument (get_this_cexpression ());
                vcast.add_argument (new CCodeIdentifier (get_ccode_type_id (iface)));
diff --git a/tests/Makefile.am b/tests/Makefile.am
index d3958f666..b282f1e2d 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -492,6 +492,7 @@ TESTS = \
        objects/interface-abstract-async-override.vala \
        objects/interface-async-captured-generic.vala \
        objects/interface-generics.vala \
+       objects/interface-parameter-nowrapper.vala \
        objects/interface-property-base-access.vala \
        objects/interface-property-base-impl.vala \
        objects/interface-property-delegate.vala \
diff --git a/tests/objects/interface-parameter-nowrapper.vala 
b/tests/objects/interface-parameter-nowrapper.vala
new file mode 100644
index 000000000..e10915b9a
--- /dev/null
+++ b/tests/objects/interface-parameter-nowrapper.vala
@@ -0,0 +1,20 @@
+interface IFoo {
+       [NoWrapper]
+       public abstract int foo ();
+}
+
+class Bar {
+       public Bar (IFoo foo) {
+               assert (foo.foo () == 42);
+       }
+}
+
+class Foo : IFoo {
+       public int foo () {
+               return 42;
+       }
+}
+
+void main () {
+       new Bar (new Foo ());
+}