Enable flow analysis for out parameters

Fixes bug 638363.

1 files changed, 6 insertions, 2 deletions

diff --git a/vala/valaunaryexpression.vala b/vala/valaunaryexpression.vala
index a26c3dac4..11c3bb417 100644
--- a/vala/valaunaryexpression.vala
+++ b/vala/valaunaryexpression.vala
@@ -253,17 +253,21 @@ public class Vala.UnaryExpression : Expression {
 		codegen.visit_expression (this);
 	}
 
-	public override void get_defined_variables (Collection<LocalVariable> collection) {
+	public override void get_defined_variables (Collection<Variable> collection) {
 		inner.get_defined_variables (collection);
 		if (operator == UnaryOperator.OUT || operator == UnaryOperator.REF) {
 			var local = inner.symbol_reference as LocalVariable;
+			var param = inner.symbol_reference as Parameter;
 			if (local != null) {
 				collection.add (local);
 			}
+			if (param != null && param.direction == ParameterDirection.OUT) {
+				collection.add (param);
+			}
 		}
 	}
 
-	public override void get_used_variables (Collection<LocalVariable> collection) {
+	public override void get_used_variables (Collection<Variable> collection) {
 		if (operator != UnaryOperator.OUT) {
 			inner.get_used_variables (collection);
 		}