From c0ea338bd2765c1af808a96e72a3928a52e4f558 Mon Sep 17 00:00:00 2001
From: Volker Reichelt <v.reichelt@netcologne.de>
Date: Tue, 4 Apr 2017 16:30:44 +0000
Subject: [PATCH] re PR c++/80296 (Broken diagnostic 'unary_plus_expr' not
 supported by expression)

        PR c++/80296
        * cxx-pretty-print.c (cxx_pretty_printer::expression): Add
        UNARY_PLUS_EXPR case.

        * g++.dg/cpp0x/alias-decl-80296.C: New test.

From-SVN: r246683
---
 gcc/cp/ChangeLog                              | 6 ++++++
 gcc/cp/cxx-pretty-print.c                     | 1 +
 gcc/testsuite/ChangeLog                       | 5 +++++
 gcc/testsuite/g++.dg/cpp0x/alias-decl-80296.C | 9 +++++++++
 4 files changed, 21 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/cpp0x/alias-decl-80296.C

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index a28dcb5c638..6cacac15525 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2017-04-04  Volker Reichelt  <v.reichelt@netcologne.de>
+
+	PR c++/80296
+	* cxx-pretty-print.c (cxx_pretty_printer::expression): Add
+	UNARY_PLUS_EXPR case.
+
 2017-04-03  Jason Merrill  <jason@redhat.com>
 
 	* semantics.c (finish_template_type): Check CLASSTYPE_TEMPLATE_INFO.
diff --git a/gcc/cp/cxx-pretty-print.c b/gcc/cp/cxx-pretty-print.c
index 470d124102d..f76c30a3390 100644
--- a/gcc/cp/cxx-pretty-print.c
+++ b/gcc/cp/cxx-pretty-print.c
@@ -1112,6 +1112,7 @@ cxx_pretty_printer::expression (tree t)
     case SIZEOF_EXPR:
     case ALIGNOF_EXPR:
     case NOEXCEPT_EXPR:
+    case UNARY_PLUS_EXPR:
       unary_expression (t);
       break;
 
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 0d5f12853d9..9c1a764a7ef 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2017-04-04  Volker Reichelt  <v.reichelt@netcologne.de>
+
+	PR c++/80296
+	* g++.dg/cpp0x/alias-decl-80296.C: New test.
+
 2017-04-04  Thomas Preud'homme  <thomas.preudhomme@arm.com>
 
 	PR target/80307
diff --git a/gcc/testsuite/g++.dg/cpp0x/alias-decl-80296.C b/gcc/testsuite/g++.dg/cpp0x/alias-decl-80296.C
new file mode 100644
index 00000000000..86643876ff9
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/alias-decl-80296.C
@@ -0,0 +1,9 @@
+// { dg-do compile { target c++11 } }
+// { dg-bogus "not supported by" "" { target *-*-* } 0 }
+
+template <int...> struct A {};
+
+template <int... N> using B = A<+N...>;
+
+B<int> b; // { dg-error "type/value mismatch" }
+          // { dg-message "expected a constant" "expected" { target *-*-* } 8 }
-- 
2.30.2