Index: cp/lambda.c
===================================================================
--- cp/lambda.c	(revision 239118)
+++ cp/lambda.c	(working copy)
@@ -492,6 +492,8 @@ add_capture (tree lambda, tree id, tree orig_init,
   else
     {
       type = lambda_capture_field_type (initializer, explicit_init_p);
+      if (type == error_mark_node)
+	return error_mark_node;
       if (by_reference_p)
 	{
 	  type = build_reference_type (type);
Index: testsuite/g++.dg/cpp1y/lambda-ice1.C
===================================================================
--- testsuite/g++.dg/cpp1y/lambda-ice1.C	(revision 0)
+++ testsuite/g++.dg/cpp1y/lambda-ice1.C	(working copy)
@@ -0,0 +1,7 @@
+// PR c++/72800
+// { dg-do compile { target c++14 } }
+
+void foo ()
+{
+  [n {}] {};  // { dg-error "one element|deducing" }
+}