From cf15c41988bdb2ff12325111603434a60cdf6c26 Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Thu, 16 Dec 2010 00:02:33 +0000
Subject: [PATCH] Don't crash on Sizeof of undefined type.

From-SVN: r167884
---
 gcc/go/gofrontend/expressions.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/go/gofrontend/expressions.cc b/gcc/go/gofrontend/expressions.cc
index 4f6e4ed3622..39bbc84512a 100644
--- a/gcc/go/gofrontend/expressions.cc
+++ b/gcc/go/gofrontend/expressions.cc
@@ -7069,7 +7069,8 @@ Builtin_call_expression::check_one_arg()
       return false;
     }
   if (args->front()->is_error_expression()
-      || args->front()->type()->is_error_type())
+      || args->front()->type()->is_error_type()
+      || args->front()->type()->is_undefined())
     {
       this->set_is_error();
       return false;
-- 
2.30.2