Fix string templates

diff --git a/vala/valacodetransformer.vala b/vala/valacodetransformer.vala
index c2c84a5d10ef7d62dca0187e728304ef907512aa..70b9aa17bce4a83fc29be61a8edb9a279b4d9a01 100644 (file)
--- a/vala/valacodetransformer.vala
+++ b/vala/valacodetransformer.vala
@@ -295,7 +295,7 @@ public class Vala.CodeTransformer : CodeVisitor {
        }
 
        public Expression stringify (Expression expr) {
-               if (expr.value_type.data_type != null && expr.value_type.data_type.is_subtype_of (context.analyzer.string_type.data_type)) {
+               if (expr.value_type != null && expr.value_type.data_type != null && expr.value_type.data_type.is_subtype_of (context.analyzer.string_type.data_type)) {
                        return expr;
                } else {
                        return expression (@"%?.to_string ()", {expr});