diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index fc5351815bb..d382a04f895 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2012-11-14  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/55323
+	* init.c (emit_mem_initializers): Skip arguments == error_mark_node.
+
 2012-11-14  Fabien Chêne  <fabien@gcc.gnu.org>
 
 	PR c++/11750
diff --git a/gcc/cp/init.c b/gcc/cp/init.c
index c842aaca4c6..9f886c0013e 100644
--- a/gcc/cp/init.c
+++ b/gcc/cp/init.c
@@ -1047,12 +1047,17 @@ emit_mem_initializers (tree mem_inits)
   in_base_initializer = 1;
 
   /* Initialize base classes.  */
-  while (mem_inits
-	 && TREE_CODE (TREE_PURPOSE (mem_inits)) != FIELD_DECL)
+  for (; (mem_inits
+	  && TREE_CODE (TREE_PURPOSE (mem_inits)) != FIELD_DECL);
+       mem_inits = TREE_CHAIN (mem_inits))
     {
       tree subobject = TREE_PURPOSE (mem_inits);
       tree arguments = TREE_VALUE (mem_inits);
 
+      /* We already have issued an error message.  */
+      if (arguments == error_mark_node)
+	continue;
+
       if (arguments == NULL_TREE)
 	{
 	  /* If these initializations are taking place in a copy constructor,
@@ -1085,8 +1090,6 @@ emit_mem_initializers (tree mem_inits)
                               tf_warning_or_error);
 	  expand_cleanup_for_base (subobject, NULL_TREE);
 	}
-
-      mem_inits = TREE_CHAIN (mem_inits);
     }
   in_base_initializer = 0;
 
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 23424c50154..07e2a9e55c1 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,15 +1,13 @@
-2012-11-14  Fabien Chêne  <fabien@gcc.gnu.org>
+2012-11-14  Paolo Carlini  <paolo.carlini@oracle.com>
 
-	PR c++/11750
-	* call.c (build_new_method_call_1): Check that the instance type
-	and the function context are the same before setting the flag
-	LOOKUP_NONVIRTUAL.
+	PR c++/55323
+	* g++.dg/cpp0x/vt-55323.C: New.
 
 2012-11-13  Sriraman Tallam  <tmsriram@google.com>
 
-	* testsuite/g++.dg/mv4.C: Add require ifunc. Change error message.
-	* testsuite/g++.dg/mv5.C: Add require ifunc.
-	* testsuite/g++.dg/mv6.C: Add require ifunc.
+	* g++.dg/mv4.C: Add require ifunc. Change error message.
+	* g++.dg/mv5.C: Add require ifunc.
+	* g++.dg/mv6.C: Add require ifunc.
 
 2012-11-13  Martin Jambor  <mjambor@suse.cz>
 
diff --git a/gcc/testsuite/g++.dg/cpp0x/vt-55323.C b/gcc/testsuite/g++.dg/cpp0x/vt-55323.C
new file mode 100644
index 00000000000..d517b608694
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/vt-55323.C
@@ -0,0 +1,12 @@
+// { dg-options "-std=c++11" }
+
+struct foo {
+  foo(int a, float b);
+};
+
+struct bar : foo {
+  template<typename... Args>
+  bar(Args&&... args) : foo(2, args){} // { dg-error "parameter packs" }
+};
+
+bar b(2,1.);