2011-12-08 Richard Guenther <rguenther@suse.de>

	PR lto/49945
	* lto-streamer-out.c (tree_is_indexable): Localize variably
	modified types and their FIELD_DECLs.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@182107 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1f26fa9..84083ed 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2011-12-08  Richard Guenther  <rguenther@suse.de>
+
+       PR lto/49945
+       * lto-streamer-out.c (tree_is_indexable): Localize variably
+       modified types and their FIELD_DECLs.
+
 2011-12-08  Eric Botcazou  <ebotcazou@adacore.com>
 
        PR tree-optimization/51315

diff --git a/gcc/lto-streamer-out.c b/gcc/lto-streamer-out.c
index 655cf89..e5c79d1 100644 (file)
--- a/gcc/lto-streamer-out.c
+++ b/gcc/lto-streamer-out.c
@@ -139,6 +139,16 @@ tree_is_indexable (tree t)
           && DECL_CONTEXT (t)
           && TREE_CODE (DECL_CONTEXT (t)) == FUNCTION_DECL)
     return false;
+  /* Variably modified types need to be streamed alongside function
+     bodies because they can refer to local entities.  Together with
+     them we have to localize their members as well.
+     ???  In theory that includes non-FIELD_DECLs as well.  */
+  else if (TYPE_P (t)
+          && variably_modified_type_p (t, NULL_TREE))
+    return false;
+  else if (TREE_CODE (t) == FIELD_DECL
+          && variably_modified_type_p (DECL_CONTEXT (t), NULL_TREE))
+    return false;
   else
     return (TYPE_P (t) || DECL_P (t) || TREE_CODE (t) == SSA_NAME);
 }