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

74 files changed, 74 insertions, 74 deletions

diff --git a/bits/byteswap.h b/bits/byteswap.h
index ccf613a9f6..6438a8b389 100644
--- a/bits/byteswap.h
+++ b/bits/byteswap.h
@@ -1,5 +1,5 @@
 /* Macros and inline functions to swap the order of bytes in integer values.
-   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/bits/confname.h b/bits/confname.h
index 5dc8215093..8068bda273 100644
--- a/bits/confname.h
+++ b/bits/confname.h
@@ -1,5 +1,5 @@
 /* `sysconf', `pathconf', and `confstr' NAME values.  Generic version.
-   Copyright (C) 1993-2020 Free Software Foundation, Inc.
+   Copyright (C) 1993-2021 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/bits/dirent.h b/bits/dirent.h
index d102c446c2..f8e8287ee9 100644
--- a/bits/dirent.h
+++ b/bits/dirent.h
@@ -1,5 +1,5 @@
 /* Directory entry structure `struct dirent'.  4.4BSD/Generic version.
-   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/bits/dirent_ext.h b/bits/dirent_ext.h
index 6e472f54c6..bc9dba68cd 100644
--- a/bits/dirent_ext.h
+++ b/bits/dirent_ext.h
@@ -1,5 +1,5 @@
 /* System-specific extensions of <dirent.h>, generic version.
-   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/bits/dlfcn.h b/bits/dlfcn.h
index ed67f29bc3..f3bc63e958 100644
--- a/bits/dlfcn.h
+++ b/bits/dlfcn.h
@@ -1,5 +1,5 @@
 /* System dependent definitions for run-time dynamic loading.
-   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/bits/environments.h b/bits/environments.h
index 5f39f324ae..7049784c2f 100644
--- a/bits/environments.h
+++ b/bits/environments.h
@@ -1,4 +1,4 @@
-/* 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.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/bits/errno.h b/bits/errno.h
index 663570adac..f7c0f59632 100644
--- a/bits/errno.h
+++ b/bits/errno.h
@@ -1,5 +1,5 @@
 /* Error constants.  Generic version.
-   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/bits/fcntl.h b/bits/fcntl.h
index a8278242e5..298e95db16 100644
--- a/bits/fcntl.h
+++ b/bits/fcntl.h
@@ -1,5 +1,5 @@
 /* O_*, F_*, FD_* bit values. 4.4BSD/Generic version.
-   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/bits/fenv.h b/bits/fenv.h
index 331e6c145e..399ceeba4b 100644
--- a/bits/fenv.h
+++ b/bits/fenv.h
@@ -1,4 +1,4 @@
-/* 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/bits/floatn-common.h b/bits/floatn-common.h
index 6aa5ba12e4..b43c9532d8 100644
--- a/bits/floatn-common.h
+++ b/bits/floatn-common.h
@@ -1,6 +1,6 @@
 /* Macros to control TS 18661-3 glibc features where the same
    definitions are appropriate for all platforms.
-   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/bits/floatn.h b/bits/floatn.h
index 7ac5596e2d..e83e9bb3fc 100644
--- a/bits/floatn.h
+++ b/bits/floatn.h
@@ -1,5 +1,5 @@
 /* Macros to control TS 18661-3 glibc features.
-   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/bits/flt-eval-method.h b/bits/flt-eval-method.h
index e2b10e3356..615e14c408 100644
--- a/bits/flt-eval-method.h
+++ b/bits/flt-eval-method.h
@@ -1,5 +1,5 @@
 /* Define __GLIBC_FLT_EVAL_METHOD.
-   Copyright (C) 2016-2020 Free Software Foundation, Inc.
+   Copyright (C) 2016-2021 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/bits/fp-fast.h b/bits/fp-fast.h
index 328d223027..323fcece8d 100644
--- a/bits/fp-fast.h
+++ b/bits/fp-fast.h
@@ -1,5 +1,5 @@
 /* Define FP_FAST_* macros.
-   Copyright (C) 2016-2020 Free Software Foundation, Inc.
+   Copyright (C) 2016-2021 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/bits/fp-logb.h b/bits/fp-logb.h
index 30effcd521..cd8b431caf 100644
--- a/bits/fp-logb.h
+++ b/bits/fp-logb.h
@@ -1,5 +1,5 @@
 /* Define __FP_LOGB0_IS_MIN and __FP_LOGBNAN_IS_MIN.
-   Copyright (C) 2016-2020 Free Software Foundation, Inc.
+   Copyright (C) 2016-2021 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/bits/hwcap.h b/bits/hwcap.h
index b3d20ca6ac..e4878d154c 100644
--- a/bits/hwcap.h
+++ b/bits/hwcap.h
@@ -1,5 +1,5 @@
 /* Defines for bits in AT_HWCAP.
-   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/bits/in.h b/bits/in.h
index 0831456b76..35a95f69fb 100644
--- a/bits/in.h
+++ b/bits/in.h
@@ -1,4 +1,4 @@
-/* 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/bits/indirect-return.h b/bits/indirect-return.h
index ac389c62f5..5240a0aa14 100644
--- a/bits/indirect-return.h
+++ b/bits/indirect-return.h
@@ -1,5 +1,5 @@
 /* Definition of __INDIRECT_RETURN.  Generic version.
-   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/bits/ioctl-types.h b/bits/ioctl-types.h
index 474a52b435..81b6b826b1 100644
--- a/bits/ioctl-types.h
+++ b/bits/ioctl-types.h
@@ -1,5 +1,5 @@
 /* Structure types for pre-termios terminal ioctls.  Generic Unix version.
-   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/bits/ipc.h b/bits/ipc.h
index e2981fd5c3..0b50b8d7b7 100644
--- a/bits/ipc.h
+++ b/bits/ipc.h
@@ -1,4 +1,4 @@
-/* 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/bits/ipctypes.h b/bits/ipctypes.h
index a955cdda7f..454a1fdbbe 100644
--- a/bits/ipctypes.h
+++ b/bits/ipctypes.h
@@ -1,5 +1,5 @@
 /* bits/ipctypes.h -- Define some types used by SysV IPC/MSG/SHM.  Generic.
-   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.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/bits/iscanonical.h b/bits/iscanonical.h
index c8ac276212..189dea331e 100644
--- a/bits/iscanonical.h
+++ b/bits/iscanonical.h
@@ -1,5 +1,5 @@
 /* Define iscanonical macro.
-   Copyright (C) 2016-2020 Free Software Foundation, Inc.
+   Copyright (C) 2016-2021 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/bits/libc-header-start.h b/bits/libc-header-start.h
index b872a417be..296e1cef9b 100644
--- a/bits/libc-header-start.h
+++ b/bits/libc-header-start.h
@@ -1,5 +1,5 @@
 /* Handle feature test macros at the start of a header.
-   Copyright (C) 2016-2020 Free Software Foundation, Inc.
+   Copyright (C) 2016-2021 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/bits/libm-simd-decl-stubs.h b/bits/libm-simd-decl-stubs.h
index ef3ed54e81..b80ff332a0 100644
--- a/bits/libm-simd-decl-stubs.h
+++ b/bits/libm-simd-decl-stubs.h
@@ -1,5 +1,5 @@
 /* Empty definitions required for __MATHCALL_VEC unfolding in mathcalls.h.
-   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/bits/long-double.h b/bits/long-double.h
index bdde78f49a..fdb574d937 100644
--- a/bits/long-double.h
+++ b/bits/long-double.h
@@ -1,5 +1,5 @@
 /* Properties of long double type.
-   Copyright (C) 2016-2020 Free Software Foundation, Inc.
+   Copyright (C) 2016-2021 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/bits/math-vector.h b/bits/math-vector.h
index c4e4885507..5f964abe59 100644
--- a/bits/math-vector.h
+++ b/bits/math-vector.h
@@ -1,5 +1,5 @@
 /* Platform-specific SIMD declarations of math functions.
-   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/bits/mathdef.h b/bits/mathdef.h
index 1227b13e6f..765b0020fa 100644
--- a/bits/mathdef.h
+++ b/bits/mathdef.h
@@ -1,4 +1,4 @@
-/* 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/bits/mman.h b/bits/mman.h
index 35a76c196d..3c0c69ba49 100644
--- a/bits/mman.h
+++ b/bits/mman.h
@@ -1,5 +1,5 @@
 /* Definitions for BSD-style memory management.
-   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/bits/mqueue.h b/bits/mqueue.h
index f80aae8ddc..2ebfb5b3a8 100644
--- a/bits/mqueue.h
+++ b/bits/mqueue.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2004-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2004-2021 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/bits/msq.h b/bits/msq.h
index 8304e07efc..ef400f99d1 100644
--- a/bits/msq.h
+++ b/bits/msq.h
@@ -1,4 +1,4 @@
-/* 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/bits/netdb.h b/bits/netdb.h
index 56df2a6b3b..ecabaaad95 100644
--- a/bits/netdb.h
+++ b/bits/netdb.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/bits/param.h b/bits/param.h
index df5634ee34..e9b6d331a4 100644
--- a/bits/param.h
+++ b/bits/param.h
@@ -1,5 +1,5 @@
 /* Old-style Unix parameters and limits.  Stub version.
-   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/bits/poll.h b/bits/poll.h
index 3fe34d7512..9f5446540c 100644
--- a/bits/poll.h
+++ b/bits/poll.h
@@ -1,4 +1,4 @@
-/* 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/bits/resource.h b/bits/resource.h
index c2d25794d6..0b4714ed69 100644
--- a/bits/resource.h
+++ b/bits/resource.h
@@ -1,5 +1,5 @@
 /* Bit values & structures for resource limits.  4.4 BSD/generic GNU version.
-   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/bits/sched.h b/bits/sched.h
index 199da9599a..6cb24e1bb7 100644
--- a/bits/sched.h
+++ b/bits/sched.h
@@ -1,6 +1,6 @@
 /* Definitions of constants and data structure for POSIX 1003.1b-1993
    scheduling interface.
-   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/bits/select.h b/bits/select.h
index 14ea12f437..8204bbd4c4 100644
--- a/bits/select.h
+++ b/bits/select.h
@@ -1,4 +1,4 @@
-/* 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/bits/sem.h b/bits/sem.h
index a84bfb1dd1..9515fb9921 100644
--- a/bits/sem.h
+++ b/bits/sem.h
@@ -1,4 +1,4 @@
-/* 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/bits/shm.h b/bits/shm.h
index 9fb2599174..61f8842184 100644
--- a/bits/shm.h
+++ b/bits/shm.h
@@ -1,4 +1,4 @@
-/* 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/bits/sigaction.h b/bits/sigaction.h
index 4358dde947..f7244fb620 100644
--- a/bits/sigaction.h
+++ b/bits/sigaction.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/bits/sigcontext.h b/bits/sigcontext.h
index ba7878db72..448b8c6738 100644
--- a/bits/sigcontext.h
+++ b/bits/sigcontext.h
@@ -1,5 +1,5 @@
 /* Structure describing state saved while handling a signal.  Stub version.
-   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/bits/sigevent-consts.h b/bits/sigevent-consts.h
index e5f918a09f..d9a87f735b 100644
--- a/bits/sigevent-consts.h
+++ b/bits/sigevent-consts.h
@@ -1,5 +1,5 @@
 /* sigevent constants.  Stub version.
-   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/bits/siginfo-consts.h b/bits/siginfo-consts.h
index dbe1d18f81..bfd8033f2b 100644
--- a/bits/siginfo-consts.h
+++ b/bits/siginfo-consts.h
@@ -1,5 +1,5 @@
 /* siginfo_t constants.  Stub version.
-   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/bits/signal_ext.h b/bits/signal_ext.h
index 107c8dc447..947b5d009d 100644
--- a/bits/signal_ext.h
+++ b/bits/signal_ext.h
@@ -1,5 +1,5 @@
 /* System-specific extensions of <signal.h>, generic version.
-   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/bits/signum-arch.h b/bits/signum-arch.h
index abecff2345..ffc6a8501a 100644
--- a/bits/signum-arch.h
+++ b/bits/signum-arch.h
@@ -1,5 +1,5 @@
 /* Signal number constants.  Specific architecture definitions.
-   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/bits/signum-generic.h b/bits/signum-generic.h
index 67131853c2..4e481c148a 100644
--- a/bits/signum-generic.h
+++ b/bits/signum-generic.h
@@ -1,5 +1,5 @@
 /* Signal number constants.  Generic template.
-   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/bits/sigstack.h b/bits/sigstack.h
index 33401fc42f..8249fa1405 100644
--- a/bits/sigstack.h
+++ b/bits/sigstack.h
@@ -1,5 +1,5 @@
 /* sigstack, sigaltstack definitions.
-   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/bits/sigthread.h b/bits/sigthread.h
index 3da46de73e..bbffb95d8c 100644
--- a/bits/sigthread.h
+++ b/bits/sigthread.h
@@ -1,5 +1,5 @@
 /* Signal handling function for threaded programs.  Generic version.
-   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/bits/sockaddr.h b/bits/sockaddr.h
index 9b4759bea7..90c5bfb8df 100644
--- a/bits/sockaddr.h
+++ b/bits/sockaddr.h
@@ -1,5 +1,5 @@
 /* Definition of struct sockaddr_* common members and sizes, generic version.
-   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/bits/socket.h b/bits/socket.h
index bebb2e7a57..05ac0249c7 100644
--- a/bits/socket.h
+++ b/bits/socket.h
@@ -1,5 +1,5 @@
 /* System-specific socket constants and types.  4.4 BSD version.
-   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/bits/ss_flags.h b/bits/ss_flags.h
index cde0537bf0..cc639d8e1b 100644
--- a/bits/ss_flags.h
+++ b/bits/ss_flags.h
@@ -1,5 +1,5 @@
 /* ss_flags values for stack_t.
-   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/bits/stat.h b/bits/stat.h
index d6497c9aa7..3b04d9677f 100644
--- a/bits/stat.h
+++ b/bits/stat.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2021 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/bits/statfs.h b/bits/statfs.h
index 78c981f27b..36f19c5210 100644
--- a/bits/statfs.h
+++ b/bits/statfs.h
@@ -1,5 +1,5 @@
 /* Definition of `struct statfs', information about a filesystem.
-   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/bits/statvfs.h b/bits/statvfs.h
index 67d21cf824..998deca502 100644
--- a/bits/statvfs.h
+++ b/bits/statvfs.h
@@ -1,5 +1,5 @@
 /* Definition of `struct statvfs', information about a filesystem.
-   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/bits/stdint-intn.h b/bits/stdint-intn.h
index 9e7bbc97ba..8a1cf5db9d 100644
--- a/bits/stdint-intn.h
+++ b/bits/stdint-intn.h
@@ -1,5 +1,5 @@
 /* Define intN_t types.
-   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/bits/stdint-uintn.h b/bits/stdint-uintn.h
index cd9fd65c5c..a4fca46fd0 100644
--- a/bits/stdint-uintn.h
+++ b/bits/stdint-uintn.h
@@ -1,5 +1,5 @@
 /* Define uintN_t types.
-   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/bits/stdlib-bsearch.h b/bits/stdlib-bsearch.h
index 2f248a6937..4132dc6af0 100644
--- a/bits/stdlib-bsearch.h
+++ b/bits/stdlib-bsearch.h
@@ -1,5 +1,5 @@
 /* Perform binary search - inline version.
-   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/bits/syslog-path.h b/bits/syslog-path.h
index 056db353a7..1449062931 100644
--- a/bits/syslog-path.h
+++ b/bits/syslog-path.h
@@ -1,5 +1,5 @@
 /* <bits/syslog-path.h> -- _PATH_LOG definition
-   Copyright (C) 2006-2020 Free Software Foundation, Inc.
+   Copyright (C) 2006-2021 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/bits/sysmacros.h b/bits/sysmacros.h
index e6ba2cfe68..55913b1dff 100644
--- a/bits/sysmacros.h
+++ b/bits/sysmacros.h
@@ -1,5 +1,5 @@
 /* Definitions of macros to access `dev_t' values.
-   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/bits/termios.h b/bits/termios.h
index 7b062c2f10..03183ac531 100644
--- a/bits/termios.h
+++ b/bits/termios.h
@@ -1,5 +1,5 @@
 /* termios type and macro definitions.  4.4 BSD/generic GNU version.
-   Copyright (C) 1993-2020 Free Software Foundation, Inc.
+   Copyright (C) 1993-2021 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/bits/time.h b/bits/time.h
index 3473b7e653..9467ee8b15 100644
--- a/bits/time.h
+++ b/bits/time.h
@@ -1,5 +1,5 @@
 /* System-dependent timing definitions.  Generic version.
-   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/bits/time64.h b/bits/time64.h
index 42f21fc86e..af3e731684 100644
--- a/bits/time64.h
+++ b/bits/time64.h
@@ -1,5 +1,5 @@
 /* bits/time64.h -- underlying types for __time64_t.  Generic version.
-   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/bits/timesize.h b/bits/timesize.h
index 71bf755069..11a9c9a499 100644
--- a/bits/timesize.h
+++ b/bits/timesize.h
@@ -1,5 +1,5 @@
 /* Bit size of the time_t type at glibc build time, general case.
-   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/bits/types/error_t.h b/bits/types/error_t.h
index 63b452bac2..f8e26a9e96 100644
--- a/bits/types/error_t.h
+++ b/bits/types/error_t.h
@@ -1,5 +1,5 @@
 /* Define error_t.
-   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/bits/types/stack_t.h b/bits/types/stack_t.h
index a5aac932bb..2f78d54290 100644
--- a/bits/types/stack_t.h
+++ b/bits/types/stack_t.h
@@ -1,5 +1,5 @@
 /* Define stack_t.
-   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/bits/types/struct_sched_param.h b/bits/types/struct_sched_param.h
index db228a8d0a..78f3d0b556 100644
--- a/bits/types/struct_sched_param.h
+++ b/bits/types/struct_sched_param.h
@@ -1,5 +1,5 @@
 /* Sched parameter structure.  Generic version.
-   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/bits/typesizes.h b/bits/typesizes.h
index 8f16903a21..63564b2fa1 100644
--- a/bits/typesizes.h
+++ b/bits/typesizes.h
@@ -1,5 +1,5 @@
 /* bits/typesizes.h -- underlying types for *_t.  Generic version.
-   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.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/bits/uintn-identity.h b/bits/uintn-identity.h
index f2fc48b63d..6eb4964a1d 100644
--- a/bits/uintn-identity.h
+++ b/bits/uintn-identity.h
@@ -1,5 +1,5 @@
 /* Inline functions to return unsigned integer values unchanged.
-   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/bits/uio-ext.h b/bits/uio-ext.h
index 1116c6682e..435069ca77 100644
--- a/bits/uio-ext.h
+++ b/bits/uio-ext.h
@@ -1,5 +1,5 @@
 /* Operating system-specific extensions to sys/uio.h - generic version.
-   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/bits/uio_lim.h b/bits/uio_lim.h
index 4b540c05b6..b53510cab5 100644
--- a/bits/uio_lim.h
+++ b/bits/uio_lim.h
@@ -1,5 +1,5 @@
 /* Implementation limits related to sys/uio.h - generic version.
-   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/bits/unistd_ext.h b/bits/unistd_ext.h
index c8e10dff3f..72ecd90f62 100644
--- a/bits/unistd_ext.h
+++ b/bits/unistd_ext.h
@@ -1,5 +1,5 @@
 /* System-specific extensions of <unistd.h>, generic version.
-   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/bits/utmp.h b/bits/utmp.h
index b82d14536f..7e5512ef26 100644
--- a/bits/utmp.h
+++ b/bits/utmp.h
@@ -1,5 +1,5 @@
 /* The `struct utmp' type, describing entries in the utmp file.
-   Copyright (C) 1993-2020 Free Software Foundation, Inc.
+   Copyright (C) 1993-2021 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/bits/utsname.h b/bits/utsname.h
index fdcce846b3..8671f3f3c8 100644
--- a/bits/utsname.h
+++ b/bits/utsname.h
@@ -1,4 +1,4 @@
-/* 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/bits/waitflags.h b/bits/waitflags.h
index 82abdf7d50..03d4db2de3 100644
--- a/bits/waitflags.h
+++ b/bits/waitflags.h
@@ -1,5 +1,5 @@
 /* Definitions of flag bits for `waitpid' et al.
-   Copyright (C) 1992-2020 Free Software Foundation, Inc.
+   Copyright (C) 1992-2021 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/bits/waitstatus.h b/bits/waitstatus.h
index 66d88a0be6..baaf96ac04 100644
--- a/bits/waitstatus.h
+++ b/bits/waitstatus.h
@@ -1,5 +1,5 @@
 /* Definitions of status bits for `wait' et al.
-   Copyright (C) 1992-2020 Free Software Foundation, Inc.
+   Copyright (C) 1992-2021 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/bits/wchar.h b/bits/wchar.h
index c00c5014d6..36623e33e8 100644
--- a/bits/wchar.h
+++ b/bits/wchar.h
@@ -1,5 +1,5 @@
 /* wchar_t type related definitions.
-   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