Update copyright years.

36 files changed, 36 insertions, 36 deletions

diff --git a/libstdc++-v3/testsuite/20_util/duration/arithmetic/1.cc b/libstdc++-v3/testsuite/20_util/duration/arithmetic/1.cc
index 25c8443c9db..d91bf29a945 100644
--- a/libstdc++-v3/testsuite/20_util/duration/arithmetic/1.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/arithmetic/1.cc
@@ -1,6 +1,6 @@
 // { dg-do run { target c++11 } }
 
-// Copyright (C) 2008-2022 Free Software Foundation, Inc.
+// Copyright (C) 2008-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/arithmetic/2.cc b/libstdc++-v3/testsuite/20_util/duration/arithmetic/2.cc
index 5d9067214da..ebfca10e137 100644
--- a/libstdc++-v3/testsuite/20_util/duration/arithmetic/2.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/arithmetic/2.cc
@@ -1,6 +1,6 @@
 // { dg-do run { target c++11 } }
 
-// Copyright (C) 2008-2022 Free Software Foundation, Inc.
+// Copyright (C) 2008-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/arithmetic/58850.cc b/libstdc++-v3/testsuite/20_util/duration/arithmetic/58850.cc
index eb3aa01fde4..960d54b70b4 100644
--- a/libstdc++-v3/testsuite/20_util/duration/arithmetic/58850.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/arithmetic/58850.cc
@@ -1,7 +1,7 @@
 // { dg-do run { target c++11 } }
 // { dg-require-cstdint "" }
 
-// Copyright (C) 2013-2022 Free Software Foundation, Inc.
+// Copyright (C) 2013-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/arithmetic/constexpr.cc b/libstdc++-v3/testsuite/20_util/duration/arithmetic/constexpr.cc
index 0fde205b474..f2ef353aec6 100644
--- a/libstdc++-v3/testsuite/20_util/duration/arithmetic/constexpr.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/arithmetic/constexpr.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++11 } }
 
-// Copyright (C) 2011-2022 Free Software Foundation, Inc.
+// Copyright (C) 2011-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/arithmetic/constexpr_c++17.cc b/libstdc++-v3/testsuite/20_util/duration/arithmetic/constexpr_c++17.cc
index 4f409e8d80a..8ccce356a2a 100644
--- a/libstdc++-v3/testsuite/20_util/duration/arithmetic/constexpr_c++17.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/arithmetic/constexpr_c++17.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++17 } }
 
-// Copyright (C) 2011-2022 Free Software Foundation, Inc.
+// Copyright (C) 2011-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr2020.cc b/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr2020.cc
index fef2572ee3a..b3546fc13be 100644
--- a/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr2020.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr2020.cc
@@ -1,6 +1,6 @@
 // { dg-do run { target c++11 } }
 
-// Copyright (C) 2011-2022 Free Software Foundation, Inc.
+// Copyright (C) 2011-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr3050.cc b/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr3050.cc
index 198b323de5b..33fb4b32fb7 100644
--- a/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr3050.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr3050.cc
@@ -1,4 +1,4 @@
-// Copyright (C) 2018-2022 Free Software Foundation, Inc.
+// Copyright (C) 2018-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr934-1.cc b/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr934-1.cc
index 22ea1721868..a99a61decdf 100644
--- a/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr934-1.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr934-1.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++11 } }
 
-// Copyright (C) 2009-2022 Free Software Foundation, Inc.
+// Copyright (C) 2009-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr934-2.cc b/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr934-2.cc
index d645a556212..8aa3b2586cf 100644
--- a/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr934-2.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/arithmetic/dr934-2.cc
@@ -1,6 +1,6 @@
 // { dg-do run { target c++11 } }
 
-// Copyright (C) 2009-2022 Free Software Foundation, Inc.
+// Copyright (C) 2009-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/comparison_operators/1.cc b/libstdc++-v3/testsuite/20_util/duration/comparison_operators/1.cc
index 4cc2c491dc0..c141b4315d5 100644
--- a/libstdc++-v3/testsuite/20_util/duration/comparison_operators/1.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/comparison_operators/1.cc
@@ -1,6 +1,6 @@
 // { dg-do run { target c++11 } }
 
-// Copyright (C) 2008-2022 Free Software Foundation, Inc.
+// Copyright (C) 2008-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/comparison_operators/constexpr.cc b/libstdc++-v3/testsuite/20_util/duration/comparison_operators/constexpr.cc
index b28cfca525f..f9f8f1ac41c 100644
--- a/libstdc++-v3/testsuite/20_util/duration/comparison_operators/constexpr.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/comparison_operators/constexpr.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++11 } }
 
-// Copyright (C) 2010-2022 Free Software Foundation, Inc.
+// Copyright (C) 2010-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/comparison_operators/three_way.cc b/libstdc++-v3/testsuite/20_util/duration/comparison_operators/three_way.cc
index 61dac3a02c1..92993a743e5 100644
--- a/libstdc++-v3/testsuite/20_util/duration/comparison_operators/three_way.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/comparison_operators/three_way.cc
@@ -1,7 +1,7 @@
 // { dg-options "-std=gnu++2a" }
 // { dg-do run { target c++2a } }
 
-// Copyright (C) 2020-2022 Free Software Foundation, Inc.
+// Copyright (C) 2020-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/cons/1.cc b/libstdc++-v3/testsuite/20_util/duration/cons/1.cc
index b8eb3b84851..330eb028a2a 100644
--- a/libstdc++-v3/testsuite/20_util/duration/cons/1.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/cons/1.cc
@@ -1,6 +1,6 @@
 // { dg-do run { target c++11 } }
 
-// Copyright (C) 2008-2022 Free Software Foundation, Inc.
+// Copyright (C) 2008-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/cons/1_neg.cc b/libstdc++-v3/testsuite/20_util/duration/cons/1_neg.cc
index 7c9bcac3ed7..f9e0ca10a52 100644
--- a/libstdc++-v3/testsuite/20_util/duration/cons/1_neg.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/cons/1_neg.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++11 } }
 
-// Copyright (C) 2008-2022 Free Software Foundation, Inc.
+// Copyright (C) 2008-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/cons/2.cc b/libstdc++-v3/testsuite/20_util/duration/cons/2.cc
index 2c3247f8f22..95ec17be76e 100644
--- a/libstdc++-v3/testsuite/20_util/duration/cons/2.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/cons/2.cc
@@ -1,7 +1,7 @@
 // { dg-do run { target c++11 } }
 // { dg-additional-options "-ffloat-store" { target { m68*-*-* || ia32 } } }
 
-// Copyright (C) 2008-2022 Free Software Foundation, Inc.
+// Copyright (C) 2008-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/cons/54025.cc b/libstdc++-v3/testsuite/20_util/duration/cons/54025.cc
index ed3bb3862df..a4ca019b170 100644
--- a/libstdc++-v3/testsuite/20_util/duration/cons/54025.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/cons/54025.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++11 } }
 
-// Copyright (C) 2012-2022 Free Software Foundation, Inc.
+// Copyright (C) 2012-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/cons/constexpr.cc b/libstdc++-v3/testsuite/20_util/duration/cons/constexpr.cc
index ea042423788..2c19acd8afe 100644
--- a/libstdc++-v3/testsuite/20_util/duration/cons/constexpr.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/cons/constexpr.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++11 } }
 
-// Copyright (C) 2010-2022 Free Software Foundation, Inc.
+// Copyright (C) 2010-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/cons/dr1177.cc b/libstdc++-v3/testsuite/20_util/duration/cons/dr1177.cc
index 1eb6e0fa3f8..d4a963bdb35 100644
--- a/libstdc++-v3/testsuite/20_util/duration/cons/dr1177.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/cons/dr1177.cc
@@ -1,4 +1,4 @@
-// Copyright (C) 2017-2022 Free Software Foundation, Inc.
+// Copyright (C) 2017-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/cons/dr2094.cc b/libstdc++-v3/testsuite/20_util/duration/cons/dr2094.cc
index 7bd8f90fe6c..31d2337fae1 100644
--- a/libstdc++-v3/testsuite/20_util/duration/cons/dr2094.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/cons/dr2094.cc
@@ -1,4 +1,4 @@
-// Copyright (C) 2020-2022 Free Software Foundation, Inc.
+// Copyright (C) 2020-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/cons/dr3050.cc b/libstdc++-v3/testsuite/20_util/duration/cons/dr3050.cc
index 60d2e2c0ad6..ba091a3ce92 100644
--- a/libstdc++-v3/testsuite/20_util/duration/cons/dr3050.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/cons/dr3050.cc
@@ -1,4 +1,4 @@
-// Copyright (C) 2018-2022 Free Software Foundation, Inc.
+// Copyright (C) 2018-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/cons/dr974_neg.cc b/libstdc++-v3/testsuite/20_util/duration/cons/dr974_neg.cc
index 782c3ac8def..c97456178c5 100644
--- a/libstdc++-v3/testsuite/20_util/duration/cons/dr974_neg.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/cons/dr974_neg.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++11 } }
 
-// Copyright (C) 2009-2022 Free Software Foundation, Inc.
+// Copyright (C) 2009-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/literals/61166.cc b/libstdc++-v3/testsuite/20_util/duration/literals/61166.cc
index b22c11aaf88..778cff76df0 100644
--- a/libstdc++-v3/testsuite/20_util/duration/literals/61166.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/literals/61166.cc
@@ -1,6 +1,6 @@
 // { dg-do run { target c++14 } }
 
-// Copyright (C) 2014-2022 Free Software Foundation, Inc.
+// Copyright (C) 2014-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/literals/65499.cc b/libstdc++-v3/testsuite/20_util/duration/literals/65499.cc
index 3bb2f71bfb6..933cbcd94c6 100644
--- a/libstdc++-v3/testsuite/20_util/duration/literals/65499.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/literals/65499.cc
@@ -1,4 +1,4 @@
-// Copyright (C) 2015-2022 Free Software Foundation, Inc.
+// Copyright (C) 2015-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/literals/84671.cc b/libstdc++-v3/testsuite/20_util/duration/literals/84671.cc
index 665be5d5f47..b685bc4ac86 100644
--- a/libstdc++-v3/testsuite/20_util/duration/literals/84671.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/literals/84671.cc
@@ -1,4 +1,4 @@
-// Copyright (C) 2018-2022 Free Software Foundation, Inc.
+// Copyright (C) 2018-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/literals/range_neg.cc b/libstdc++-v3/testsuite/20_util/duration/literals/range_neg.cc
index 3bb14d0c494..ae5a1da6c8d 100644
--- a/libstdc++-v3/testsuite/20_util/duration/literals/range_neg.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/literals/range_neg.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++14 } }
 
-// Copyright (C) 2014-2022 Free Software Foundation, Inc.
+// Copyright (C) 2014-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/literals/types.cc b/libstdc++-v3/testsuite/20_util/duration/literals/types.cc
index 0189a5ae8c9..17699687718 100644
--- a/libstdc++-v3/testsuite/20_util/duration/literals/types.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/literals/types.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++14 } }
 
-// Copyright (C) 2013-2022 Free Software Foundation, Inc.
+// Copyright (C) 2013-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/literals/values.cc b/libstdc++-v3/testsuite/20_util/duration/literals/values.cc
index 1b8331dcf6b..0d21000c6d3 100644
--- a/libstdc++-v3/testsuite/20_util/duration/literals/values.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/literals/values.cc
@@ -1,6 +1,6 @@
 // { dg-do run { target c++14 } }
 
-// Copyright (C) 2013-2022 Free Software Foundation, Inc.
+// Copyright (C) 2013-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/requirements/constexpr_functions.cc b/libstdc++-v3/testsuite/20_util/duration/requirements/constexpr_functions.cc
index 5fddecfa267..bdd4c0eb820 100644
--- a/libstdc++-v3/testsuite/20_util/duration/requirements/constexpr_functions.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/requirements/constexpr_functions.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++11 } }
 
-// Copyright (C) 2010-2022 Free Software Foundation, Inc.
+// Copyright (C) 2010-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/requirements/explicit_instantiation.cc b/libstdc++-v3/testsuite/20_util/duration/requirements/explicit_instantiation.cc
index a65b1a4ab03..605635300f2 100644
--- a/libstdc++-v3/testsuite/20_util/duration/requirements/explicit_instantiation.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/requirements/explicit_instantiation.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++11 } }
 
-// Copyright (C) 2008-2022 Free Software Foundation, Inc.
+// Copyright (C) 2008-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/requirements/noexcept.cc b/libstdc++-v3/testsuite/20_util/duration/requirements/noexcept.cc
index 706cc6a4d41..9ffbf263a0c 100644
--- a/libstdc++-v3/testsuite/20_util/duration/requirements/noexcept.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/requirements/noexcept.cc
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2022 Free Software Foundation, Inc.
+// Copyright (C) 2019-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/requirements/reduced_period.cc b/libstdc++-v3/testsuite/20_util/duration/requirements/reduced_period.cc
index dae61a5ca1c..2502c01bb3b 100644
--- a/libstdc++-v3/testsuite/20_util/duration/requirements/reduced_period.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/requirements/reduced_period.cc
@@ -1,4 +1,4 @@
-// Copyright (C) 2020-2022 Free Software Foundation, Inc.
+// Copyright (C) 2020-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/requirements/sfinae_friendly_1.cc b/libstdc++-v3/testsuite/20_util/duration/requirements/sfinae_friendly_1.cc
index 914df53f3c0..e1240d30e04 100644
--- a/libstdc++-v3/testsuite/20_util/duration/requirements/sfinae_friendly_1.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/requirements/sfinae_friendly_1.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++11 } }
 
-// Copyright (C) 2012-2022 Free Software Foundation, Inc.
+// Copyright (C) 2012-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/requirements/treat_as_floating_point_v.cc b/libstdc++-v3/testsuite/20_util/duration/requirements/treat_as_floating_point_v.cc
index 1130fbba14b..ef0f8e39437 100644
--- a/libstdc++-v3/testsuite/20_util/duration/requirements/treat_as_floating_point_v.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/requirements/treat_as_floating_point_v.cc
@@ -1,6 +1,6 @@
 // { dg-do compile { target c++17 } }
 
-// Copyright (C) 2014-2022 Free Software Foundation, Inc.
+// Copyright (C) 2014-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/requirements/typedefs_neg1.cc b/libstdc++-v3/testsuite/20_util/duration/requirements/typedefs_neg1.cc
index 6e473acf19c..49c9fe77168 100644
--- a/libstdc++-v3/testsuite/20_util/duration/requirements/typedefs_neg1.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/requirements/typedefs_neg1.cc
@@ -1,7 +1,7 @@
 // { dg-do compile { target c++11 } }
 // 2008-07-31 Chris Fairles <chris.fairles@gmail.com>
 
-// Copyright (C) 2008-2022 Free Software Foundation, Inc.
+// Copyright (C) 2008-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/requirements/typedefs_neg2.cc b/libstdc++-v3/testsuite/20_util/duration/requirements/typedefs_neg2.cc
index 39409e21fcc..23c5d479b1f 100644
--- a/libstdc++-v3/testsuite/20_util/duration/requirements/typedefs_neg2.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/requirements/typedefs_neg2.cc
@@ -1,7 +1,7 @@
 // { dg-do compile { target c++11 } }
 // 2008-07-31 Chris Fairles <chris.fairles@gmail.com>
 
-// Copyright (C) 2008-2022 Free Software Foundation, Inc.
+// Copyright (C) 2008-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
diff --git a/libstdc++-v3/testsuite/20_util/duration/requirements/typedefs_neg3.cc b/libstdc++-v3/testsuite/20_util/duration/requirements/typedefs_neg3.cc
index 32ed7789460..8be6140a448 100644
--- a/libstdc++-v3/testsuite/20_util/duration/requirements/typedefs_neg3.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/requirements/typedefs_neg3.cc
@@ -1,7 +1,7 @@
 // { dg-do compile { target c++11 } }
 // 2008-07-31 Chris Fairles <chris.fairles@gmail.com>
 
-// Copyright (C) 2008-2022 Free Software Foundation, Inc.
+// Copyright (C) 2008-2023 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the