1 files changed, 4 insertions, 0 deletions
diff --git a/boot/parser.yy b/boot/parser.yy
index 1dd42a8..aad5769 100644
--- a/boot/parser.yy
+++ b/boot/parser.yy
@@ -351,6 +351,10 @@ unary_expression:
         {
             $$ = new boot::unary_expression(boot::make_position(@$), $2, boot::unary_operator::minus);
         }
+    | "+" operand
+        {
+            $$ = new boot::unary_expression(boot::make_position(@$), $2, boot::unary_operator::plus);
+        }
 expressions:
     expression "," expressions
         {