binaryexpression: Fix is_non_null for COALESCE expressions

diff --git a/vala/valabinaryexpression.vala b/vala/valabinaryexpression.vala
index b081090d0305a841f39e0ac6a078862eb9e4304c..7e08f64a491475d3a9cddbaf79b757fc5692dfd9 100644 (file)
--- a/vala/valabinaryexpression.vala
+++ b/vala/valabinaryexpression.vala
@@ -138,6 +138,10 @@ public class Vala.BinaryExpression : Expression {
        }
 
        public override bool is_non_null () {
+               if (operator == BinaryOperator.COALESCE) {
+                       // The coalesce operator makes sure that `right` is taken if left is null
+                       return right.is_non_null ();
+               }
                return left.is_non_null () && right.is_non_null ();
        }