From 8d2866eafb6865f084791494a7a449065cb0287c Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Wed, 22 Dec 2010 16:47:53 +0000
Subject: Don't crash on array type with erroneous length expression.

From-SVN: r168176
---
 gcc/go/gofrontend/types.cc | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'gcc')

diff --git a/gcc/go/gofrontend/types.cc b/gcc/go/gofrontend/types.cc
index c0914ca..7a9bfc7 100644
--- a/gcc/go/gofrontend/types.cc
+++ b/gcc/go/gofrontend/types.cc
@@ -4359,8 +4359,12 @@ Array_type::get_length_tree(Gogo* gogo)
 	  // expression.  FIXME: This won't work in general.
 	  Translate_context context(gogo, NULL, NULL, NULL_TREE);
 	  tree len = this->length_->get_tree(&context);
-	  len = convert_to_integer(integer_type_node, len);
-	  this->length_tree_ = save_expr(len);
+	  if (len != error_mark_node)
+	    {
+	      len = convert_to_integer(integer_type_node, len);
+	      len = save_expr(len);
+	    }
+	  this->length_tree_ = len;
 	}
     }
   return this->length_tree_;
-- 
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