diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 18658784acd..88f78305f8d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2010-01-14  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/42665
+	* gimple.c (iterative_hash_gimple_type): Avoid hashing
+	error_mark_node.
+
 2010-01-14  Ira Rosen  <irar@il.ibm.com>
 
 	PR tree-optimization/42709
diff --git a/gcc/gimple.c b/gcc/gimple.c
index 3ee15b56989..dce5ba59fb7 100644
--- a/gcc/gimple.c
+++ b/gcc/gimple.c
@@ -3707,8 +3707,12 @@ iterative_hash_gimple_type (tree type, hashval_t val,
   /* For integer types hash the types min/max values and the string flag.  */
   if (TREE_CODE (type) == INTEGER_TYPE)
     {
-      v = iterative_hash_expr (TYPE_MIN_VALUE (type), v);
-      v = iterative_hash_expr (TYPE_MAX_VALUE (type), v);
+      /* OMP lowering can introduce error_mark_node in place of
+	 random local decls in types.  */
+      if (TYPE_MIN_VALUE (type) != error_mark_node)
+	v = iterative_hash_expr (TYPE_MIN_VALUE (type), v);
+      if (TYPE_MAX_VALUE (type) != error_mark_node)
+	v = iterative_hash_expr (TYPE_MAX_VALUE (type), v);
       v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v);
     }