codegen: Cast instance parameter in member-initializer for base-properties

This fixes warnings issued with -Wincompatible-pointer-types

Fixes https://gitlab.gnome.org/GNOME/vala/issues/899

3 files changed, 25 insertions, 0 deletions

diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index 932228eb5..1e0bfb4e2 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -5024,6 +5024,11 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
 					}
 				} else if (init.symbol_reference is Property) {
 					var p = (Property) init.symbol_reference;
+					if (p.base_property != null) {
+						p = p.base_property;
+					} else if (p.base_interface_property != null) {
+						p = p.base_interface_property;
+					}
 					var instance_target_type = SemanticAnalyzer.get_data_type_for_symbol ((TypeSymbol) p.parent_symbol);
 					var typed_inst = transform_value (new GLibValue (expr.type_reference, instance), instance_target_type, init);
 					var inst_ma = new MemberAccess.simple ("fake");
diff --git a/tests/Makefile.am b/tests/Makefile.am
index c3b44aa7f..24f9d1622 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -354,6 +354,7 @@ TESTS = \
 	objects/interface-property-delegate.vala \
 	objects/interface-property-override.vala \
 	objects/interface-virtual-override.vala \
+	objects/member-initializer-base-properties.vala \
 	objects/methods.vala \
 	objects/paramspec.vala \
 	objects/plugin-module-init.vala \
diff --git a/tests/objects/member-initializer-base-properties.vala b/tests/objects/member-initializer-base-properties.vala
new file mode 100644
index 000000000..b21956d29
--- /dev/null
+++ b/tests/objects/member-initializer-base-properties.vala
@@ -0,0 +1,19 @@
+interface IFoo {
+	public abstract string prop { get; set; }
+}
+
+class Bar {
+	public virtual string prop_v { get; set; }
+}
+
+class Foo : Bar, IFoo {
+	public string prop { get; set; }
+	public override string prop_v { get; set; }
+}
+
+void main() {
+	var foo = new Foo () {
+		prop = "bar",
+		prop_v = "bar"
+	};
+}