From 6d61c698747eb439a6543c54443d2184f91b5051 Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Wed, 23 Feb 2011 05:02:40 +0000
Subject: [PATCH] Don't crash on erroneous type descriptor in interface
 conversion.

From-SVN: r170429
---
 gcc/go/gofrontend/expressions.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gcc/go/gofrontend/expressions.cc b/gcc/go/gofrontend/expressions.cc
index 264dd579b6f..050942c619c 100644
--- a/gcc/go/gofrontend/expressions.cc
+++ b/gcc/go/gofrontend/expressions.cc
@@ -362,6 +362,8 @@ Expression::convert_type_to_interface(Translate_context* context,
       first_field_value = fold_convert_loc(location, const_ptr_type_node,
 					   method_table);
     }
+  if (first_field_value == error_mark_node)
+    return error_mark_node;
 
   // Start building a constructor for the value we will return.
 
-- 
2.30.2