From 42c29b389ddc93b6b186e4ce26fc4149a10715f7 Mon Sep 17 00:00:00 2001
From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 27 Mar 2018 19:58:30 +0000
Subject: [PATCH] 	PR c++/85076 	* tree.c (cp_build_reference_type): If
 to_type is error_mark_node, 	return it right away.

	* g++.dg/cpp1y/pr85076.C: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@258901 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/cp/ChangeLog                     | 6 ++++++
 gcc/cp/tree.c                        | 3 +++
 gcc/testsuite/ChangeLog              | 5 +++++
 gcc/testsuite/g++.dg/cpp1y/pr85076.C | 6 ++++++
 4 files changed, 20 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/cpp1y/pr85076.C

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index f7f48879b6f..b410f3d003e 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2018-03-27  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/85076
+	* tree.c (cp_build_reference_type): If to_type is error_mark_node,
+	return it right away.
+
 2018-03-27  Volker Reichelt  <v.reichelt@netcologne.de>
 
 	* search.c (check_final_overrider): Use inform instead of error
diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c
index f1a90bdec0f..0355b9ed9c5 100644
--- a/gcc/cp/tree.c
+++ b/gcc/cp/tree.c
@@ -1078,6 +1078,9 @@ cp_build_reference_type (tree to_type, bool rval)
 {
   tree lvalue_ref, t;
 
+  if (to_type == error_mark_node)
+    return error_mark_node;
+
   if (TREE_CODE (to_type) == REFERENCE_TYPE)
     {
       rval = rval && TYPE_REF_IS_RVALUE (to_type);
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index b8d56f8532c..9cd81d9946b 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-03-27  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/85076
+	* g++.dg/cpp1y/pr85076.C: New test.
+
 2018-03-27  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
 	PR fortran/85084
diff --git a/gcc/testsuite/g++.dg/cpp1y/pr85076.C b/gcc/testsuite/g++.dg/cpp1y/pr85076.C
new file mode 100644
index 00000000000..6d54dea6c01
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp1y/pr85076.C
@@ -0,0 +1,6 @@
+// PR c++/85076
+// { dg-do compile { target c++14 } }
+
+template<typename> struct A*;	// { dg-error "expected unqualified-id before" }
+
+auto a = [](A<auto>) {};	// { dg-error "is not a template|has incomplete type" }
-- 
2.11.4.GIT