From 8a6777514985793bc607ea1b915675a566033730 Mon Sep 17 00:00:00 2001
From: gingerBill <bill@gingerbill.org>
Date: Sun, 23 Feb 2020 10:20:12 +0000
Subject: [PATCH] Fix #571

---
 src/check_expr.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/check_expr.cpp b/src/check_expr.cpp
index 722acaa24..d98b3d0d6 100644
--- a/src/check_expr.cpp
+++ b/src/check_expr.cpp
@@ -2260,6 +2260,8 @@ bool check_cast_internal(CheckerContext *c, Operand *x, Type *type) {
 			x->mode = Addressing_Value;
 		} else if (is_type_slice(type) && is_type_string(x->type)) {
 			x->mode = Addressing_Value;
+		} else if (is_type_union(type)) {
+			x->mode = Addressing_Value;
 		}
 		return true;
 	}