Index: gcc/lto/lto-tree.h
===================================================================
--- gcc/lto/lto-tree.h	(revision 189801)
+++ gcc/lto/lto-tree.h	(working copy)
@@ -28,7 +28,7 @@
   struct tree_identifier base;
 };
 
-struct GTY(()) lang_decl
+struct GTY((variable_size)) lang_decl
 {
   int dummy;  /* Added because ggc does not like empty structs.  */
 };
Index: gcc/go/go-lang.c
===================================================================
--- gcc/go/go-lang.c	(revision 189801)
+++ gcc/go/go-lang.c	(working copy)
@@ -50,7 +50,7 @@
 
 /* Language-dependent contents of a decl.  */
 
-struct GTY(()) lang_decl
+struct GTY((variable_size)) lang_decl
 {
   char dummy;
 };
Index: gcc/c/c-lang.h
===================================================================
--- gcc/c/c-lang.h	(revision 189801)
+++ gcc/c/c-lang.h	(working copy)
@@ -36,7 +36,7 @@
   tree objc_info;
 };
 
-struct GTY(()) lang_decl {
+struct GTY((variable_size)) lang_decl {
   char dummy;
 };