From 0c16ddf7006c4d440a3a8840b7ed41dbed080be0 Mon Sep 17 00:00:00 2001
From: Richard Stallman <rms@gnu.org>
Date: Thu, 15 Jul 1993 05:40:42 +0000
Subject: [PATCH] (build_c_cast): When casting to union, if value is array or
 function, do default_conversion.

From-SVN: r4926
---
 gcc/c-typeck.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gcc/c-typeck.c b/gcc/c-typeck.c
index 8ff4da5524f..85d2058f900 100644
--- a/gcc/c-typeck.c
+++ b/gcc/c-typeck.c
@@ -3854,6 +3854,10 @@ build_c_cast (type, expr)
   else if (TREE_CODE (type) == UNION_TYPE)
     {
       tree field;
+      if (TREE_CODE (TREE_TYPE (value)) == ARRAY_TYPE
+	  || TREE_CODE (TREE_TYPE (value)) == FUNCTION_TYPE)
+	value = default_conversion (value);
+
       for (field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field))
 	if (comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (field)),
 		       TYPE_MAIN_VARIANT (TREE_TYPE (value))))
-- 
2.30.2