Checking patch libio/genops.c...
error: while searching for:
libc_hidden_def (_IO_adjust_column)

int
_IO_flush_all_lockp (int do_lock)
{
  int result = 0;
  FILE *fp;

error: patch failed: libio/genops.c:682
error: libio/genops.c: patch does not apply
Checking patch libio/libioP.h...
error: while searching for:
extern int _IO_old_do_write (FILE *, const char *, size_t);
extern int _IO_wdo_write (FILE *, const wchar_t *, size_t);
libc_hidden_proto (_IO_wdo_write)
extern int _IO_flush_all_lockp (int);
extern int _IO_flush_all (void);
libc_hidden_proto (_IO_flush_all)
extern void _IO_flush_all_linebuffered (void);

error: patch failed: libio/libioP.h:537
error: libio/libioP.h: patch does not apply
Checking patch sysdeps/pthread/Makefile...
Checking patch sysdeps/pthread/tst-stdio1.c...
error: while searching for:
/* Copyright (C) 2002-2023 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
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <pthread.h>
#include <signal.h>
#include <stdio.h>
#include <unistd.h>

static int do_test (void);

#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"

static void *tf (void *a)
{
  flockfile (stdout);
  /* This call should never return.  */
  return a;
}


int
do_test (void)
{
  pthread_t th;

  flockfile (stdout);

  if (pthread_create (&th, NULL, tf, NULL) != 0)
    {
      write_message ("create failed\n");
      _exit (1);
    }

  delayed_exit (1);
  xpthread_join (th);

  puts ("join returned");

  return 1;
}

error: patch failed: sysdeps/pthread/tst-stdio1.c:1
error: sysdeps/pthread/tst-stdio1.c: patch does not apply