vala: Init formal_target_type of ArrayCreationExpr from InitializerList

formal_target_type is expected to be set when inferring generic type
parameters.

Fixes https://gitlab.gnome.org/GNOME/vala/issues/835

3 files changed, 16 insertions, 0 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index cada29aa2..877e71a30 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -144,6 +144,7 @@ TESTS = \
 	methods/bug784691.vala \
 	methods/bug791215.vala \
 	methods/bug791283.vala \
+	methods/argument-array-initilizer.vala \
 	methods/generics.vala \
 	methods/printf-invalid.test \
 	methods/printf-constructor.vala \
diff --git a/tests/methods/argument-array-initilizer.vala b/tests/methods/argument-array-initilizer.vala
new file mode 100644
index 000000000..3034599b7
--- /dev/null
+++ b/tests/methods/argument-array-initilizer.vala
@@ -0,0 +1,14 @@
+class Foo : Object {
+}
+
+G get_object<G> (Object[] o) {
+	return null;
+}
+
+Foo get_foo () {
+	return get_object ({ new Foo () });
+}
+
+void main() {
+	get_foo ();
+}
diff --git a/vala/valainitializerlist.vala b/vala/valainitializerlist.vala
index f7d806cfe..9a6ca85e3 100644
--- a/vala/valainitializerlist.vala
+++ b/vala/valainitializerlist.vala
@@ -166,6 +166,7 @@ public class Vala.InitializerList : Expression {
 				var array_creation = new ArrayCreationExpression (array_type.element_type.copy (), array_type.rank, this, source_reference);
 				array_creation.length_type = array_type.length_type.copy ();
 				array_creation.target_type = target_type;
+				array_creation.formal_target_type = formal_target_type;
 				old_parent_node.replace_expression (this, array_creation);
 
 				checked = false;