[deliverable/binutils-gdb.git] / gnulib / import / error.c

/* Error handler for noninteractive utilities
   Copyright (C) 1990-1998, 2000-2007, 2009-2019 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
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

/* Written by David MacKenzie <djm@gnu.ai.mit.edu>.  */

#if !_LIBC
# include <config.h>
#endif

#include "error.h"

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#if !_LIBC && ENABLE_NLS
# include "gettext.h"
# define _(msgid) gettext (msgid)
#endif

#ifdef _LIBC
# include <libintl.h>
# include <stdbool.h>
# include <stdint.h>
# include <wchar.h>
# define mbsrtowcs __mbsrtowcs
# define USE_UNLOCKED_IO 0
# define _GL_ATTRIBUTE_FORMAT_PRINTF(a, b)
# define _GL_ARG_NONNULL(a)
#else
# include "getprogname.h"
#endif

#if USE_UNLOCKED_IO
# include "unlocked-io.h"
#endif

#ifndef _
# define _(String) String
#endif

/* If NULL, error will flush stdout, then print on stderr the program
   name, a colon and a space.  Otherwise, error will call this
   function without parameters instead.  */
void (*error_print_progname) (void);

/* This variable is incremented each time 'error' is called.  */
unsigned int error_message_count;

#ifdef _LIBC
/* In the GNU C library, there is a predefined variable for this.  */

# define program_name program_invocation_name
# include <errno.h>
# include <limits.h>
# include <libio/libioP.h>

/* In GNU libc we want do not want to use the common name 'error' directly.
   Instead make it a weak alias.  */
extern void __error (int status, int errnum, const char *message, ...)
     __attribute__ ((__format__ (__printf__, 3, 4)));
extern void __error_at_line (int status, int errnum, const char *file_name,
                             unsigned int line_number, const char *message,
                             ...)
     __attribute__ ((__format__ (__printf__, 5, 6)));
# define error __error
# define error_at_line __error_at_line

# include <libio/iolibio.h>
# define fflush(s) _IO_fflush (s)
# undef putc
# define putc(c, fp) _IO_putc (c, fp)

# include <bits/libc-lock.h>

#else /* not _LIBC */

# include <fcntl.h>
# include <unistd.h>

# if defined _WIN32 && ! defined __CYGWIN__
/* Get declarations of the native Windows API functions.  */
#  define WIN32_LEAN_AND_MEAN
#  include <windows.h>
/* Get _get_osfhandle.  */
#  if GNULIB_MSVC_NOTHROW
#   include "msvc-nothrow.h"
#  else
#   include <io.h>
#  endif
# endif

/* The gnulib override of fcntl is not needed in this file.  */
# undef fcntl

# if !(GNULIB_STRERROR_R_POSIX || HAVE_DECL_STRERROR_R)
#  ifndef HAVE_DECL_STRERROR_R
"this configure-time declaration test was not run"
#  endif
#  if STRERROR_R_CHAR_P
char *strerror_r (int errnum, char *buf, size_t buflen);
#  else
int strerror_r (int errnum, char *buf, size_t buflen);
#  endif
# endif

# define program_name getprogname ()

# if GNULIB_STRERROR_R_POSIX || HAVE_STRERROR_R || defined strerror_r
#  define __strerror_r strerror_r
# endif /* GNULIB_STRERROR_R_POSIX || HAVE_STRERROR_R || defined strerror_r */
#endif  /* not _LIBC */

#if !_LIBC
/* Return non-zero if FD is open.  */
static int
is_open (int fd)
{
# if defined _WIN32 && ! defined __CYGWIN__
  /* On native Windows: The initial state of unassigned standard file
     descriptors is that they are open but point to an INVALID_HANDLE_VALUE.
     There is no fcntl, and the gnulib replacement fcntl does not support
     F_GETFL.  */
  return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
# else
#  ifndef F_GETFL
#   error Please port fcntl to your platform
#  endif
  return 0 <= fcntl (fd, F_GETFL);
# endif
}
#endif

static void
flush_stdout (void)
{
#if !_LIBC
  int stdout_fd;

# if GNULIB_FREOPEN_SAFER
  /* Use of gnulib's freopen-safer module normally ensures that
       fileno (stdout) == 1
     whenever stdout is open.  */
  stdout_fd = STDOUT_FILENO;
# else
  /* POSIX states that fileno (stdout) after fclose is unspecified.  But in
     practice it is not a problem, because stdout is statically allocated and
     the fd of a FILE stream is stored as a field in its allocated memory.  */
  stdout_fd = fileno (stdout);
# endif
  /* POSIX states that fflush (stdout) after fclose is unspecified; it
     is safe in glibc, but not on all other platforms.  fflush (NULL)
     is always defined, but too draconian.  */
  if (0 <= stdout_fd && is_open (stdout_fd))
#endif
    fflush (stdout);
}

static void
print_errno_message (int errnum)
{
  char const *s;

#if _LIBC || GNULIB_STRERROR_R_POSIX || defined HAVE_STRERROR_R
  char errbuf[1024];
# if _LIBC || (!GNULIB_STRERROR_R_POSIX && STRERROR_R_CHAR_P)
  s = __strerror_r (errnum, errbuf, sizeof errbuf);
# else
  if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0)
    s = errbuf;
  else
    s = 0;
# endif
#else
  s = strerror (errnum);
#endif

#if !_LIBC
  if (! s)
    s = _("Unknown system error");
#endif

#if _LIBC
  __fxprintf (NULL, ": %s", s);
#else
  fprintf (stderr, ": %s", s);
#endif
}

static void _GL_ATTRIBUTE_FORMAT_PRINTF (3, 0) _GL_ARG_NONNULL ((3))
error_tail (int status, int errnum, const char *message, va_list args)
{
#if _LIBC
  if (_IO_fwide (stderr, 0) > 0)
    {
      size_t len = strlen (message) + 1;
      wchar_t *wmessage = NULL;
      mbstate_t st;
      size_t res;
      const char *tmp;
      bool use_malloc = false;

      while (1)
        {
          if (__libc_use_alloca (len * sizeof (wchar_t)))
            wmessage = (wchar_t *) alloca (len * sizeof (wchar_t));
          else
            {
              if (!use_malloc)
                wmessage = NULL;

              wchar_t *p = (wchar_t *) realloc (wmessage,
                                                len * sizeof (wchar_t));
              if (p == NULL)
                {
                  free (wmessage);
                  fputws_unlocked (L"out of memory\n", stderr);
                  return;
                }
              wmessage = p;
              use_malloc = true;
            }

          memset (&st, '\0', sizeof (st));
          tmp = message;

          res = mbsrtowcs (wmessage, &tmp, len, &st);
          if (res != len)
            break;

          if (__builtin_expect (len >= SIZE_MAX / sizeof (wchar_t) / 2, 0))
            {
              /* This really should not happen if everything is fine.  */
              res = (size_t) -1;
              break;
            }

          len *= 2;
        }

      if (res == (size_t) -1)
        {
          /* The string cannot be converted.  */
          if (use_malloc)
            {
              free (wmessage);
              use_malloc = false;
            }
          wmessage = (wchar_t *) L"???";
        }

      __vfwprintf (stderr, wmessage, args);

      if (use_malloc)
        free (wmessage);
    }
  else
#endif
    vfprintf (stderr, message, args);

  ++error_message_count;
  if (errnum)
    print_errno_message (errnum);
#if _LIBC
  __fxprintf (NULL, "\n");
#else
  putc ('\n', stderr);
#endif
  fflush (stderr);
  if (status)
    exit (status);
}


/* Print the program name and error message MESSAGE, which is a printf-style
   format string with optional args.
   If ERRNUM is nonzero, print its corresponding system error message.
   Exit with status STATUS if it is nonzero.  */
void
error (int status, int errnum, const char *message, ...)
{
  va_list args;

#if defined _LIBC && defined __libc_ptf_call
  /* We do not want this call to be cut short by a thread
     cancellation.  Therefore disable cancellation for now.  */
  int state = PTHREAD_CANCEL_ENABLE;
  __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
                   0);
#endif

  flush_stdout ();
#ifdef _LIBC
  _IO_flockfile (stderr);
#endif
  if (error_print_progname)
    (*error_print_progname) ();
  else
    {
#if _LIBC
      __fxprintf (NULL, "%s: ", program_name);
#else
      fprintf (stderr, "%s: ", program_name);
#endif
    }

  va_start (args, message);
  error_tail (status, errnum, message, args);
  va_end (args);

#ifdef _LIBC
  _IO_funlockfile (stderr);
# ifdef __libc_ptf_call
  __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
# endif
#endif
}
\f
/* Sometimes we want to have at most one error per line.  This
   variable controls whether this mode is selected or not.  */
int error_one_per_line;

void
error_at_line (int status, int errnum, const char *file_name,
               unsigned int line_number, const char *message, ...)
{
  va_list args;

  if (error_one_per_line)
    {
      static const char *old_file_name;
      static unsigned int old_line_number;

      if (old_line_number == line_number
          && (file_name == old_file_name
              || (old_file_name != NULL
                  && file_name != NULL
                  && strcmp (old_file_name, file_name) == 0)))

        /* Simply return and print nothing.  */
        return;

      old_file_name = file_name;
      old_line_number = line_number;
    }

#if defined _LIBC && defined __libc_ptf_call
  /* We do not want this call to be cut short by a thread
     cancellation.  Therefore disable cancellation for now.  */
  int state = PTHREAD_CANCEL_ENABLE;
  __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
                   0);
#endif

  flush_stdout ();
#ifdef _LIBC
  _IO_flockfile (stderr);
#endif
  if (error_print_progname)
    (*error_print_progname) ();
  else
    {
#if _LIBC
      __fxprintf (NULL, "%s:", program_name);
#else
      fprintf (stderr, "%s:", program_name);
#endif
    }

#if _LIBC
  __fxprintf (NULL, file_name != NULL ? "%s:%u: " : " ",
              file_name, line_number);
#else
  fprintf (stderr, file_name != NULL ? "%s:%u: " : " ",
           file_name, line_number);
#endif

  va_start (args, message);
  error_tail (status, errnum, message, args);
  va_end (args);

#ifdef _LIBC
  _IO_funlockfile (stderr);
# ifdef __libc_ptf_call
  __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
# endif
#endif
}

#ifdef _LIBC
/* Make the weak alias.  */
# undef error
# undef error_at_line
weak_alias (__error, error)
weak_alias (__error_at_line, error_at_line)
#endif
Commit	Line	Data
6ec2e0f5	1	/* Error handler for noninteractive utilities
c0c3707f	2	Copyright (C) 1990-1998, 2000-2007, 2009-2019 Free Software Foundation, Inc.
6ec2e0f5 SDJ	3	This file is part of the GNU C Library.
	4
	5	This program is free software: you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation; either version 3 of the License, or
	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
c0c3707f	16	along with this program. If not, see <https://www.gnu.org/licenses/>. */
6ec2e0f5 SDJ	17
	18	/* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
	19
	20	#if !_LIBC
	21	# include <config.h>
	22	#endif
	23
	24	#include "error.h"
	25
	26	#include <stdarg.h>
	27	#include <stdio.h>
	28	#include <stdlib.h>
	29	#include <string.h>
	30
	31	#if !_LIBC && ENABLE_NLS
	32	# include "gettext.h"
	33	# define _(msgid) gettext (msgid)
	34	#endif
	35
	36	#ifdef _LIBC
	37	# include <libintl.h>
	38	# include <stdbool.h>
	39	# include <stdint.h>
	40	# include <wchar.h>
	41	# define mbsrtowcs __mbsrtowcs
	42	# define USE_UNLOCKED_IO 0
	43	# define _GL_ATTRIBUTE_FORMAT_PRINTF(a, b)
	44	# define _GL_ARG_NONNULL(a)
	45	#else
	46	# include "getprogname.h"
	47	#endif
	48
	49	#if USE_UNLOCKED_IO
	50	# include "unlocked-io.h"
	51	#endif
	52
	53	#ifndef _
	54	# define _(String) String
	55	#endif
	56
	57	/* If NULL, error will flush stdout, then print on stderr the program
	58	name, a colon and a space. Otherwise, error will call this
	59	function without parameters instead. */
	60	void (*error_print_progname) (void);
	61
	62	/* This variable is incremented each time 'error' is called. */
	63	unsigned int error_message_count;
	64
	65	#ifdef _LIBC
	66	/* In the GNU C library, there is a predefined variable for this. */
	67
	68	# define program_name program_invocation_name
	69	# include <errno.h>
	70	# include <limits.h>
	71	# include <libio/libioP.h>
	72
	73	/* In GNU libc we want do not want to use the common name 'error' directly.
	74	Instead make it a weak alias. */
	75	extern void __error (int status, int errnum, const char *message, ...)
	76	__attribute__ ((__format__ (__printf__, 3, 4)));
	77	extern void __error_at_line (int status, int errnum, const char *file_name,
	78	unsigned int line_number, const char *message,
	79	...)
	80	__attribute__ ((__format__ (__printf__, 5, 6)));
81	# define error __error
82	# define error_at_line __error_at_line
83
84	# include <libio/iolibio.h>
85	# define fflush(s) _IO_fflush (s)
86	# undef putc
87	# define putc(c, fp) _IO_putc (c, fp)
88
89	# include <bits/libc-lock.h>
90
91	#else /* not _LIBC */
92
93	# include <fcntl.h>
94	# include <unistd.h>
95
c0c3707f	96	# if defined _WIN32 && ! defined __CYGWIN__
6ec2e0f5 SDJ	97	/* Get declarations of the native Windows API functions. */
	98	# define WIN32_LEAN_AND_MEAN
	99	# include <windows.h>
	100	/* Get _get_osfhandle. */
c0c3707f CB	101	# if GNULIB_MSVC_NOTHROW
	102	# include "msvc-nothrow.h"
	103	# else
	104	# include <io.h>
	105	# endif
6ec2e0f5 SDJ	106	# endif
	107
	108	/* The gnulib override of fcntl is not needed in this file. */
	109	# undef fcntl
	110
c0c3707f	111	# if !(GNULIB_STRERROR_R_POSIX \|\| HAVE_DECL_STRERROR_R)
6ec2e0f5 SDJ	112	# ifndef HAVE_DECL_STRERROR_R
	113	"this configure-time declaration test was not run"
	114	# endif
	115	# if STRERROR_R_CHAR_P
c0c3707f	116	char strerror_r (int errnum, char buf, size_t buflen);
6ec2e0f5	117	# else
c0c3707f	118	int strerror_r (int errnum, char *buf, size_t buflen);
6ec2e0f5 SDJ	119	# endif
	120	# endif
	121
c0c3707f	122	# define program_name getprogname ()
6ec2e0f5	123
c0c3707f	124	# if GNULIB_STRERROR_R_POSIX \|\| HAVE_STRERROR_R \|\| defined strerror_r
6ec2e0f5	125	# define __strerror_r strerror_r
c0c3707f	126	# endif /* GNULIB_STRERROR_R_POSIX \|\| HAVE_STRERROR_R \|\| defined strerror_r */
6ec2e0f5 SDJ	127	#endif /* not _LIBC */
	128
	129	#if !_LIBC
	130	/* Return non-zero if FD is open. */
	131	static int
	132	is_open (int fd)
	133	{
c0c3707f	134	# if defined _WIN32 && ! defined __CYGWIN__
6ec2e0f5 SDJ	135	/* On native Windows: The initial state of unassigned standard file
	136	descriptors is that they are open but point to an INVALID_HANDLE_VALUE.
	137	There is no fcntl, and the gnulib replacement fcntl does not support
	138	F_GETFL. */
	139	return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
	140	# else
	141	# ifndef F_GETFL
	142	# error Please port fcntl to your platform
	143	# endif
	144	return 0 <= fcntl (fd, F_GETFL);
	145	# endif
	146	}
	147	#endif
	148
	149	static void
	150	flush_stdout (void)
	151	{
	152	#if !_LIBC
	153	int stdout_fd;
	154
	155	# if GNULIB_FREOPEN_SAFER
	156	/* Use of gnulib's freopen-safer module normally ensures that
	157	fileno (stdout) == 1
	158	whenever stdout is open. */
	159	stdout_fd = STDOUT_FILENO;
	160	# else
	161	/* POSIX states that fileno (stdout) after fclose is unspecified. But in
	162	practice it is not a problem, because stdout is statically allocated and
	163	the fd of a FILE stream is stored as a field in its allocated memory. */
	164	stdout_fd = fileno (stdout);
	165	# endif
	166	/* POSIX states that fflush (stdout) after fclose is unspecified; it
	167	is safe in glibc, but not on all other platforms. fflush (NULL)
	168	is always defined, but too draconian. */
	169	if (0 <= stdout_fd && is_open (stdout_fd))
	170	#endif
	171	fflush (stdout);
	172	}
	173
	174	static void
	175	print_errno_message (int errnum)
	176	{
	177	char const *s;
	178
c0c3707f	179	#if _LIBC \|\| GNULIB_STRERROR_R_POSIX \|\| defined HAVE_STRERROR_R
6ec2e0f5	180	char errbuf[1024];
c0c3707f	181	# if _LIBC \|\| (!GNULIB_STRERROR_R_POSIX && STRERROR_R_CHAR_P)
6ec2e0f5 SDJ	182	s = __strerror_r (errnum, errbuf, sizeof errbuf);
	183	# else
	184	if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0)
	185	s = errbuf;
	186	else
	187	s = 0;
	188	# endif
	189	#else
	190	s = strerror (errnum);
	191	#endif
	192
	193	#if !_LIBC
	194	if (! s)
	195	s = _("Unknown system error");
	196	#endif
	197
	198	#if _LIBC
	199	__fxprintf (NULL, ": %s", s);
	200	#else
	201	fprintf (stderr, ": %s", s);
	202	#endif
	203	}
	204
	205	static void _GL_ATTRIBUTE_FORMAT_PRINTF (3, 0) _GL_ARG_NONNULL ((3))
	206	error_tail (int status, int errnum, const char *message, va_list args)
	207	{
	208	#if _LIBC
	209	if (_IO_fwide (stderr, 0) > 0)
	210	{
	211	size_t len = strlen (message) + 1;
	212	wchar_t *wmessage = NULL;
	213	mbstate_t st;
	214	size_t res;
	215	const char *tmp;
	216	bool use_malloc = false;
	217
	218	while (1)
	219	{
	220	if (__libc_use_alloca (len * sizeof (wchar_t)))
	221	wmessage = (wchar_t ) alloca (len sizeof (wchar_t));
	222	else
	223	{
	224	if (!use_malloc)
	225	wmessage = NULL;
	226
	227	wchar_t p = (wchar_t ) realloc (wmessage,
	228	len * sizeof (wchar_t));
	229	if (p == NULL)
	230	{
	231	free (wmessage);
	232	fputws_unlocked (L"out of memory\n", stderr);
	233	return;
	234	}
	235	wmessage = p;
	236	use_malloc = true;
	237	}
	238
	239	memset (&st, '\0', sizeof (st));
	240	tmp = message;
	241
	242	res = mbsrtowcs (wmessage, &tmp, len, &st);
	243	if (res != len)
	244	break;
	245
246	if (__builtin_expect (len >= SIZE_MAX / sizeof (wchar_t) / 2, 0))
247	{
248	/* This really should not happen if everything is fine. */
249	res = (size_t) -1;
250	break;
251	}
252
253	len *= 2;
254	}
255
256	if (res == (size_t) -1)
257	{
258	/* The string cannot be converted. */
259	if (use_malloc)
260	{
261	free (wmessage);
262	use_malloc = false;
263	}
264	wmessage = (wchar_t *) L"???";
265	}
266
267	__vfwprintf (stderr, wmessage, args);
268
269	if (use_malloc)
270	free (wmessage);
271	}
272	else
273	#endif
274	vfprintf (stderr, message, args);
6ec2e0f5 SDJ	275
	276	++error_message_count;
	277	if (errnum)
	278	print_errno_message (errnum);
	279	#if _LIBC
	280	__fxprintf (NULL, "\n");
	281	#else
	282	putc ('\n', stderr);
	283	#endif
	284	fflush (stderr);
	285	if (status)
	286	exit (status);
	287	}
	288
	289
	290	/* Print the program name and error message MESSAGE, which is a printf-style
	291	format string with optional args.
	292	If ERRNUM is nonzero, print its corresponding system error message.
	293	Exit with status STATUS if it is nonzero. */
	294	void
	295	error (int status, int errnum, const char *message, ...)
	296	{
	297	va_list args;
	298
	299	#if defined _LIBC && defined __libc_ptf_call
	300	/* We do not want this call to be cut short by a thread
	301	cancellation. Therefore disable cancellation for now. */
	302	int state = PTHREAD_CANCEL_ENABLE;
	303	__libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
	304	0);
	305	#endif
	306
	307	flush_stdout ();
	308	#ifdef _LIBC
	309	_IO_flockfile (stderr);
	310	#endif
	311	if (error_print_progname)
	312	(*error_print_progname) ();
	313	else
	314	{
	315	#if _LIBC
	316	__fxprintf (NULL, "%s: ", program_name);
	317	#else
	318	fprintf (stderr, "%s: ", program_name);
	319	#endif
	320	}
	321
	322	va_start (args, message);
	323	error_tail (status, errnum, message, args);
c0c3707f	324	va_end (args);
6ec2e0f5 SDJ	325
	326	#ifdef _LIBC
	327	_IO_funlockfile (stderr);
	328	# ifdef __libc_ptf_call
	329	__libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
	330	# endif
	331	#endif
	332	}
	333	\f
	334	/* Sometimes we want to have at most one error per line. This
	335	variable controls whether this mode is selected or not. */
	336	int error_one_per_line;
	337
	338	void
	339	error_at_line (int status, int errnum, const char *file_name,
	340	unsigned int line_number, const char *message, ...)
	341	{
	342	va_list args;
	343
	344	if (error_one_per_line)
	345	{
	346	static const char *old_file_name;
	347	static unsigned int old_line_number;
	348
	349	if (old_line_number == line_number
	350	&& (file_name == old_file_name
	351	\|\| (old_file_name != NULL
	352	&& file_name != NULL
	353	&& strcmp (old_file_name, file_name) == 0)))
	354
	355	/* Simply return and print nothing. */
	356	return;
	357
	358	old_file_name = file_name;
	359	old_line_number = line_number;
	360	}
	361
	362	#if defined _LIBC && defined __libc_ptf_call
	363	/* We do not want this call to be cut short by a thread
	364	cancellation. Therefore disable cancellation for now. */
	365	int state = PTHREAD_CANCEL_ENABLE;
	366	__libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
	367	0);
	368	#endif
	369
	370	flush_stdout ();
	371	#ifdef _LIBC
	372	_IO_flockfile (stderr);
	373	#endif
	374	if (error_print_progname)
	375	(*error_print_progname) ();
	376	else
	377	{
	378	#if _LIBC
	379	__fxprintf (NULL, "%s:", program_name);
	380	#else
	381	fprintf (stderr, "%s:", program_name);
	382	#endif
	383	}
	384
	385	#if _LIBC
	386	__fxprintf (NULL, file_name != NULL ? "%s:%u: " : " ",
	387	file_name, line_number);
	388	#else
389	fprintf (stderr, file_name != NULL ? "%s:%u: " : " ",
390	file_name, line_number);
391	#endif
392
393	va_start (args, message);
394	error_tail (status, errnum, message, args);
c0c3707f	395	va_end (args);
6ec2e0f5 SDJ	396
	397	#ifdef _LIBC
	398	_IO_funlockfile (stderr);
	399	# ifdef __libc_ptf_call
	400	__libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
	401	# endif
	402	#endif
	403	}
	404
	405	#ifdef _LIBC
	406	/* Make the weak alias. */
	407	# undef error
	408	# undef error_at_line
	409	weak_alias (__error, error)
	410	weak_alias (__error_at_line, error_at_line)
	411	#endif