[Bug middle-end/49945] [4.7 Regression] gcc.dg/guality/vla-1.c FAILs with -flto

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49945

--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-12-07 
14:59:52 UTC ---
Index: gcc/lto-streamer-out.c
===================================================================
--- gcc/lto-streamer-out.c      (revision 182081)
+++ gcc/lto-streamer-out.c      (working copy)
@@ -129,6 +129,19 @@ tree_is_indexable (tree t)
   else if (TREE_CODE (t) == VAR_DECL && decl_function_context (t)
           && !TREE_STATIC (t))
     return false;
+  else if (TYPE_P (t)
+          && variably_modified_type_p (t, NULL_TREE))
+    return false;
   else
     return (TYPE_P (t) || DECL_P (t) || TREE_CODE (t) == SSA_NAME);
 }

fixes it.