Update copyright dates with scripts/update-copyrights

I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master

37 files changed, 37 insertions, 37 deletions

diff --git a/include/alloc_buffer.h b/include/alloc_buffer.h
index 4706a1b..db8b79d 100644
--- a/include/alloc_buffer.h
+++ b/include/alloc_buffer.h
@@ -1,5 +1,5 @@
 /* Allocation from a fixed-size buffer.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/allocate_once.h b/include/allocate_once.h
index c0f9184..7f17221 100644
--- a/include/allocate_once.h
+++ b/include/allocate_once.h
@@ -1,5 +1,5 @@
 /* Allocate and initialize an object once, in a thread-safe fashion.
-   Copyright (C) 2018-2020 Free Software Foundation, Inc.
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/array_length.h b/include/array_length.h
index 6d2ebe8..12c5126 100644
--- a/include/array_length.h
+++ b/include/array_length.h
@@ -1,5 +1,5 @@
 /* The array_length and array_end macros.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/atomic.h b/include/atomic.h
index 818b22b..f2ac3e2 100644
--- a/include/atomic.h
+++ b/include/atomic.h
@@ -1,5 +1,5 @@
 /* Internal macros for atomic operations for GNU C Library.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
diff --git a/include/bits/xopen_lim.h b/include/bits/xopen_lim.h
index 957010d..0be465f 100644
--- a/include/bits/xopen_lim.h
+++ b/include/bits/xopen_lim.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/features.h b/include/features.h
index 066eb0e..a71ac85 100644
--- a/include/features.h
+++ b/include/features.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/file_change_detection.h b/include/file_change_detection.h
index 767e578..9de2bd0 100644
--- a/include/file_change_detection.h
+++ b/include/file_change_detection.h
@@ -1,5 +1,5 @@
 /* Detecting file changes using modification times.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/gnu-versions.h b/include/gnu-versions.h
index d2f06f6..6900605 100644
--- a/include/gnu-versions.h
+++ b/include/gnu-versions.h
@@ -1,5 +1,5 @@
 /* Header with interface version macros for library pieces copied elsewhere.
-   Copyright (C) 1995-2020 Free Software Foundation, Inc.
+   Copyright (C) 1995-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/gnu/libc-version.h b/include/gnu/libc-version.h
index 37d9e86..b2f8169 100644
--- a/include/gnu/libc-version.h
+++ b/include/gnu/libc-version.h
@@ -1,5 +1,5 @@
 /* Interface to GNU libc specific functions for version information.
-   Copyright (C) 1998-2020 Free Software Foundation, Inc.
+   Copyright (C) 1998-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/ifunc-impl-list.h b/include/ifunc-impl-list.h
index 5b970f0..312dcc5 100644
--- a/include/ifunc-impl-list.h
+++ b/include/ifunc-impl-list.h
@@ -1,5 +1,5 @@
 /* Internal header file for __libc_supported_implementations.
-   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/inline-hashtab.h b/include/inline-hashtab.h
index 856719c..bab691b 100644
--- a/include/inline-hashtab.h
+++ b/include/inline-hashtab.h
@@ -1,5 +1,5 @@
 /* Fully-inline hash table, used mainly for managing TLS descriptors.
-   Copyright (C) 1999-2020 Free Software Foundation, Inc.
+   Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Alexandre Oliva  <aoliva@redhat.com>
 
diff --git a/include/intprops.h b/include/intprops.h
index 6de65b0..7077161 100644
--- a/include/intprops.h
+++ b/include/intprops.h
@@ -1,6 +1,6 @@
 /* intprops.h -- properties of integer types
 
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/include/libc-diag.h b/include/libc-diag.h
index 7356bdc..eaa8f77 100644
--- a/include/libc-diag.h
+++ b/include/libc-diag.h
@@ -1,5 +1,5 @@
 /* Macros for controlling diagnostic output from the compiler.
-   Copyright (C) 2014-2020 Free Software Foundation, Inc.
+   Copyright (C) 2014-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/libc-internal.h b/include/libc-internal.h
index c1e7405..5b18c7c 100644
--- a/include/libc-internal.h
+++ b/include/libc-internal.h
@@ -1,5 +1,5 @@
 /* Internal prototype declarations that don't fit anywhere else.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/libc-pointer-arith.h b/include/libc-pointer-arith.h
index b4d716c..72e722c 100644
--- a/include/libc-pointer-arith.h
+++ b/include/libc-pointer-arith.h
@@ -1,5 +1,5 @@
 /* Helper macros for pointer arithmetic.
-   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/libc-symbols.h b/include/libc-symbols.h
index f06ce30..ea126ae 100644
--- a/include/libc-symbols.h
+++ b/include/libc-symbols.h
@@ -1,6 +1,6 @@
 /* Support macros for making weak and strong aliases for symbols,
    and for using symbol sets and linker warnings with GNU ld.
-   Copyright (C) 1995-2020 Free Software Foundation, Inc.
+   Copyright (C) 1995-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/limits.h b/include/limits.h
index 29e9b94..c90a599 100644
--- a/include/limits.h
+++ b/include/limits.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/link.h b/include/link.h
index d4714bc..4af16cb 100644
--- a/include/link.h
+++ b/include/link.h
@@ -1,6 +1,6 @@
 /* Data structure for communication from the run-time dynamic linker for
    loaded ELF shared objects.
-   Copyright (C) 1995-2020 Free Software Foundation, Inc.
+   Copyright (C) 1995-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/list.h b/include/list.h
index 4ea22a2..7a1f167 100644
--- a/include/list.h
+++ b/include/list.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
diff --git a/include/list_t.h b/include/list_t.h
index b6f6e7b..be5942b 100644
--- a/include/list_t.h
+++ b/include/list_t.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
diff --git a/include/loop_unroll.h b/include/loop_unroll.h
index 00cf9b9..c5c6bd1 100644
--- a/include/loop_unroll.h
+++ b/include/loop_unroll.h
@@ -1,5 +1,5 @@
 /* Macro for explicit loop unrolling.
-   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/math-narrow-eval.h b/include/math-narrow-eval.h
index 137a35d..2006aad 100644
--- a/include/math-narrow-eval.h
+++ b/include/math-narrow-eval.h
@@ -1,5 +1,5 @@
 /* Narrow floating-point values to their semantic type.
-   Copyright (C) 2015-2020 Free Software Foundation, Inc.
+   Copyright (C) 2015-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/nss_files.h b/include/nss_files.h
index f45ea02..6a0dcdb 100644
--- a/include/nss_files.h
+++ b/include/nss_files.h
@@ -1,5 +1,5 @@
 /* Internal routines for nss_files.
-   Copyright (C) 2020 Free Software Foundation, Inc.
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/programs/xasprintf.h b/include/programs/xasprintf.h
index ee154af..c1c6fc7 100644
--- a/include/programs/xasprintf.h
+++ b/include/programs/xasprintf.h
@@ -1,5 +1,5 @@
 /* asprintf with out of memory checking
-   Copyright (C) 2020 Free Software Foundation, Inc.
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This program is free software; you can redistribute it and/or modify
diff --git a/include/programs/xmalloc.h b/include/programs/xmalloc.h
index fd6cf61..76e345f 100644
--- a/include/programs/xmalloc.h
+++ b/include/programs/xmalloc.h
@@ -1,5 +1,5 @@
 /* Memory related definitions for program modules.
-   Copyright (C) 1998-2020 Free Software Foundation, Inc.
+   Copyright (C) 1998-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This program is free software; you can redistribute it and/or modify
diff --git a/include/random-bits.h b/include/random-bits.h
index 7561e55..077b467 100644
--- a/include/random-bits.h
+++ b/include/random-bits.h
@@ -1,5 +1,5 @@
 /* Fast pseudo-random bits based on clock_gettime.
-   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/rounding-mode.h b/include/rounding-mode.h
index 24d0b4a..1612946 100644
--- a/include/rounding-mode.h
+++ b/include/rounding-mode.h
@@ -1,5 +1,5 @@
 /* Handle floating-point rounding mode within libc.
-   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/rtld-malloc.h b/include/rtld-malloc.h
index 9266ec5..6e6629d 100644
--- a/include/rtld-malloc.h
+++ b/include/rtld-malloc.h
@@ -1,5 +1,5 @@
 /* Redirection of malloc inside the dynamic linker.
-   Copyright (C) 2020 Free Software Foundation, Inc.
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/scratch_buffer.h b/include/scratch_buffer.h
index c39da78..f514564 100644
--- a/include/scratch_buffer.h
+++ b/include/scratch_buffer.h
@@ -1,5 +1,5 @@
 /* Variable-sized buffer with on-stack default allocation.
-   Copyright (C) 2015-2020 Free Software Foundation, Inc.
+   Copyright (C) 2015-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/set-hooks.h b/include/set-hooks.h
index dba382c..a60b5ae 100644
--- a/include/set-hooks.h
+++ b/include/set-hooks.h
@@ -1,5 +1,5 @@
 /* Macros for using symbol sets for running lists of functions.
-   Copyright (C) 1994-2020 Free Software Foundation, Inc.
+   Copyright (C) 1994-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/shlib-compat.h b/include/shlib-compat.h
index b582818..43583bb 100644
--- a/include/shlib-compat.h
+++ b/include/shlib-compat.h
@@ -1,5 +1,5 @@
 /* Macros for managing ABI-compatibility definitions using ELF symbol versions.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/stackinfo.h b/include/stackinfo.h
index d0031c1..57f4cff 100644
--- a/include/stackinfo.h
+++ b/include/stackinfo.h
@@ -1,5 +1,5 @@
 /* Details about the machine's stack: wrapper header.
-   Copyright (C) 2014-2020 Free Software Foundation, Inc.
+   Copyright (C) 2014-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/stap-probe.h b/include/stap-probe.h
index 3c24ac6..9e13a4d 100644
--- a/include/stap-probe.h
+++ b/include/stap-probe.h
@@ -1,5 +1,5 @@
 /* Macros for defining Systemtap <sys/sdt.h> static probe points.
-   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/stdc-predef.h b/include/stdc-predef.h
index eaf0a6a..e130c46 100644
--- a/include/stdc-predef.h
+++ b/include/stdc-predef.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/sys/sysmacros.h b/include/sys/sysmacros.h
index 9844a2b..e3f294d 100644
--- a/include/sys/sysmacros.h
+++ b/include/sys/sysmacros.h
@@ -1,5 +1,5 @@
 /* Definitions of macros to access 'dev_t' values.  Internal header.
-   Copyright (C) 2018-2020 Free Software Foundation, Inc.
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/sys/time.h b/include/sys/time.h
index 567e4b7..7c528c0 100644
--- a/include/sys/time.h
+++ b/include/sys/time.h
@@ -1,5 +1,5 @@
 /* Time function internal interfaces.
-   Copyright (C) 1997-2020 Free Software Foundation, Inc.
+   Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/include/values.h b/include/values.h
index 401a392..82ce830 100644
--- a/include/values.h
+++ b/include/values.h
@@ -1,5 +1,5 @@
 /* Old compatibility names for <limits.h> and <float.h> constants.
-   Copyright (C) 1995-2020 Free Software Foundation, Inc.
+   Copyright (C) 1995-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or