Index: cp/decl2.c
===================================================================
--- cp/decl2.c	(revision 195043)
+++ cp/decl2.c	(working copy)
@@ -1,7 +1,7 @@
 /* Process declarations and variables for C++ compiler.
    Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010,
-   2011, 2012 Free Software Foundation, Inc.
+   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007-2013
+   Free Software Foundation, Inc.
    Hacked by Michael Tiemann (tiemann@cygnus.com)
 
 This file is part of GCC.
@@ -2807,7 +2807,8 @@ var_defined_without_dynamic_init (tree var)
 static bool
 var_needs_tls_wrapper (tree var)
 {
-  return (DECL_THREAD_LOCAL_P (var)
+  return (!error_operand_p (var)
+	  && DECL_THREAD_LOCAL_P (var)
 	  && !DECL_GNU_TLS_P (var)
 	  && !DECL_FUNCTION_SCOPE_P (var)
 	  && !var_defined_without_dynamic_init (var));
Index: testsuite/g++.dg/tls/thread_local-ice.C
===================================================================
--- testsuite/g++.dg/tls/thread_local-ice.C	(revision 0)
+++ testsuite/g++.dg/tls/thread_local-ice.C	(working copy)
@@ -0,0 +1,6 @@
+// PR c++/55801
+// { dg-options "-std=c++11" }
+// { dg-require-effective-target tls }
+
+class C;
+thread_local C O, O2 = O;   // { dg-error "incomplete" }