diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b297a6d0984..0fc9120318b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2012-02-14  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/52178
+	* tree-streamer-in.c (lto_input_ts_field_decl_tree_pointers):
+	Do not stream DECL_QUALIFIER.
+	* tree-streamer-out.c (write_ts_field_decl_tree_pointers): Likewise.
+	* tree.c (free_lang_data_in_decl): Free DECL_QUALIFIER.
+	(find_decls_types_r): Do not walk DECL_QUALIFIER.
+
 2012-02-14  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c/52181
diff --git a/gcc/tree-streamer-in.c b/gcc/tree-streamer-in.c
index c7215105233..cc6fae7d832 100644
--- a/gcc/tree-streamer-in.c
+++ b/gcc/tree-streamer-in.c
@@ -640,7 +640,7 @@ lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 {
   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
-  DECL_QUALIFIER (expr) = stream_read_tree (ib, data_in);
+  /* Do not stream DECL_QUALIFIER, it is useless after gimplification.  */
   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 }
diff --git a/gcc/tree-streamer-out.c b/gcc/tree-streamer-out.c
index ea5834e41ce..21689dfe5f2 100644
--- a/gcc/tree-streamer-out.c
+++ b/gcc/tree-streamer-out.c
@@ -552,7 +552,7 @@ write_ts_field_decl_tree_pointers (struct output_block *ob, tree expr,
 {
   stream_write_tree (ob, DECL_FIELD_OFFSET (expr), ref_p);
   stream_write_tree (ob, DECL_BIT_FIELD_TYPE (expr), ref_p);
-  stream_write_tree (ob, DECL_QUALIFIER (expr), ref_p);
+  /* Do not stream DECL_QUALIFIER, it is useless after gimplification.  */
   stream_write_tree (ob, DECL_FIELD_BIT_OFFSET (expr), ref_p);
   stream_write_tree (ob, DECL_FCONTEXT (expr), ref_p);
 }
diff --git a/gcc/tree.c b/gcc/tree.c
index 22f9d007826..fa01583a518 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -4596,7 +4596,10 @@ free_lang_data_in_decl (tree decl)
   free_lang_data_in_one_sizepos (&DECL_SIZE (decl));
   free_lang_data_in_one_sizepos (&DECL_SIZE_UNIT (decl));
   if (TREE_CODE (decl) == FIELD_DECL)
-    free_lang_data_in_one_sizepos (&DECL_FIELD_OFFSET (decl));
+    {
+      free_lang_data_in_one_sizepos (&DECL_FIELD_OFFSET (decl));
+      DECL_QUALIFIER (decl) = NULL_TREE;
+    }
 
  if (TREE_CODE (decl) == FUNCTION_DECL)
     {
@@ -4800,7 +4803,6 @@ find_decls_types_r (tree *tp, int *ws, void *data)
 	{
 	  fld_worklist_push (DECL_FIELD_OFFSET (t), fld);
 	  fld_worklist_push (DECL_BIT_FIELD_TYPE (t), fld);
-	  fld_worklist_push (DECL_QUALIFIER (t), fld);
 	  fld_worklist_push (DECL_FIELD_BIT_OFFSET (t), fld);
 	  fld_worklist_push (DECL_FCONTEXT (t), fld);
 	}