Mercurial > hg > octave-jordi > gnulib-hg

annotate lib/error.c @ 15752:b86e9061a6d0

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New module 'msvc-nothrow'. Makes _get_osfhandle safe on MSVC 9. * lib/msvc-nothrow.h: New file. * lib/msvc-nothrow.c: New file. * m4/msvc-nothrow.m4: New file. * modules/msvc-nothrow: New file. * lib/dup2.c: Include msvc-nothrow.h. (rpl_dup2): No need to protect _get_osfhandle call here. * lib/accept4.c: Include msvc-nothrow.h. * lib/error.c: Likewise. * lib/fcntl.c: Likewise. * lib/lseek.c: Likewise. * lib/nonblocking.c: Likewise. * lib/poll.c: Likewise. * lib/read.c: Likewise. * lib/select.c: Likewise. * lib/sockets.h: Likewise. * lib/sockets.c: Likewise. * lib/stdio-read.c: Likewise. * lib/stdio-write.c: Likewise. * lib/write.c: Likewise. * lib/w32sock.h: Likewise. * lib/w32spawn.h: Likewise. * lib/flock.c: Include msvc-nothrow.h instead of <io.h>. * lib/fsync.c: Likewise. * lib/isapipe.c: Likewise. * modules/dup2 (Depends-on): Add msvc-nothrow. * modules/accept4 (Depends-on): Likewise. * modules/error (Depends-on): Likewise. * modules/fcntl (Depends-on): Likewise. * modules/lseek (Depends-on): Likewise. * modules/nonblocking (Depends-on): Likewise. * modules/poll (Depends-on): Likewise. * modules/read (Depends-on): Likewise. * modules/select (Depends-on): Likewise. * modules/sockets (Depends-on): Likewise. * modules/sigpipe (Depends-on): Likewise. * modules/write (Depends-on): Likewise. * modules/accept (Depends-on): Likewise. * modules/bind (Depends-on): Likewise. * modules/connect (Depends-on): Likewise. * modules/gethostname (Depends-on): Likewise. * modules/getpeername (Depends-on): Likewise. * modules/getsockname (Depends-on): Likewise. * modules/getsockopt (Depends-on): Likewise. * modules/ioctl (Depends-on): Likewise. * modules/listen (Depends-on): Likewise. * modules/recv (Depends-on): Likewise. * modules/recvfrom (Depends-on): Likewise. * modules/send (Depends-on): Likewise. * modules/sendto (Depends-on): Likewise. * modules/setsockopt (Depends-on): Likewise. * modules/shutdown (Depends-on): Likewise. * modules/socket (Depends-on): Likewise. * modules/execute (Depends-on): Likewise. * modules/spawn-pipe (Depends-on): Likewise. * modules/flock (Depends-on): Likewise. * modules/fsync (Depends-on): Likewise. * modules/isapipe (Depends-on): Likewise. * tests/test-cloexec.c: Include msvc-nothrow.h. * tests/test-dup-safer.c: Likewise. * tests/test-dup2.c: Likewise. * tests/test-dup3.c: Likewise. * tests/test-fcntl.c: Likewise. * tests/test-pipe.c: Likewise. * tests/test-pipe2.c: Likewise. * modules/cloexec-tests (Depends-on): Add msvc-nothrow. * modules/unistd-safer-tests (Depends-on): Likewise. * modules/dup2-tests (Depends-on): Likewise. * modules/dup3-tests (Depends-on): Likewise. * modules/fcntl-tests (Depends-on): Likewise. * modules/pipe-posix-tests (Depends-on): Likewise. * modules/pipe2-tests (Depends-on): Likewise.
author Bruno Haible <bruno@clisp.org>
date Fri, 23 Sep 2011 21:38:44 +0200
parents 3b0e2e72c0a2
children 8250f2777afc
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1 /* Error handler for noninteractive utilities
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2 Copyright (C) 1990-1998, 2000-2007, 2009-2011 Free Software Foundation, Inc.
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3 This file is part of the GNU C Library.
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 3 of the License, or
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8 (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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17
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18 /* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
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19
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20 #if !_LIBC
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21 # include <config.h>
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22 #endif
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23
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24 #include "error.h"
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25
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26 #include <stdarg.h>
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27 #include <stdio.h>
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28 #include <stdlib.h>
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29 #include <string.h>
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30
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31 #if !_LIBC && ENABLE_NLS
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32 # include "gettext.h"
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33 # define _(msgid) gettext (msgid)
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34 #endif
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35
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36 #ifdef _LIBC
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37 # include <libintl.h>
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38 # include <stdbool.h>
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39 # include <stdint.h>
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40 # include <wchar.h>
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41 # define mbsrtowcs __mbsrtowcs
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42 #endif
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43
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44 #if USE_UNLOCKED_IO
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45 # include "unlocked-io.h"
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46 #endif
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48 #ifndef _
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49 # define _(String) String
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50 #endif
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51
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52 /* If NULL, error will flush stdout, then print on stderr the program
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53 name, a colon and a space. Otherwise, error will call this
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54 function without parameters instead. */
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55 void (*error_print_progname) (void);
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56
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57 /* This variable is incremented each time `error' is called. */
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58 unsigned int error_message_count;
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60 #ifdef _LIBC
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61 /* In the GNU C library, there is a predefined variable for this. */
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63 # define program_name program_invocation_name
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64 # include <errno.h>
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65 # include <limits.h>
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66 # include <libio/libioP.h>
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67
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68 /* In GNU libc we want do not want to use the common name `error' directly.
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69 Instead make it a weak alias. */
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70 extern void __error (int status, int errnum, const char *message, ...)
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71 __attribute__ ((__format__ (__printf__, 3, 4)));
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72 extern void __error_at_line (int status, int errnum, const char *file_name,
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73 unsigned int line_number, const char *message,
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74 ...)
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75 __attribute__ ((__format__ (__printf__, 5, 6)));;
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76 # define error __error
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77 # define error_at_line __error_at_line
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78
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79 # include <libio/iolibio.h>
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80 # define fflush(s) INTUSE(_IO_fflush) (s)
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81 # undef putc
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82 # define putc(c, fp) INTUSE(_IO_putc) (c, fp)
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83
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84 # include <bits/libc-lock.h>
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85
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86 #else /* not _LIBC */
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87
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88 # include <fcntl.h>
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89 # include <unistd.h>
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90
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91 # if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
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92 /* Get declarations of the Win32 API functions. */
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93 # define WIN32_LEAN_AND_MEAN
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94 # include <windows.h>
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95 /* Get _get_osfhandle. */
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96 # include "msvc-nothrow.h"
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97 # endif
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98
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99 /* The gnulib override of fcntl is not needed in this file. */
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100 # undef fcntl
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101
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102 # if !HAVE_DECL_STRERROR_R
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103 # ifndef HAVE_DECL_STRERROR_R
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104 "this configure-time declaration test was not run"
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105 # endif
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106 # if STRERROR_R_CHAR_P
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107 char *strerror_r ();
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108 # else
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109 int strerror_r ();
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110 # endif
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111 # endif
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112
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113 /* The calling program should define program_name and set it to the
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114 name of the executing program. */
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115 extern char *program_name;
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116
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117 # if HAVE_STRERROR_R || defined strerror_r
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118 # define __strerror_r strerror_r
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119 # endif /* HAVE_STRERROR_R || defined strerror_r */
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120 #endif /* not _LIBC */
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121
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122 #if !_LIBC
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123 /* Return non-zero if FD is open. */
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124 static inline int
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
125 is_open (int fd)
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
126 {
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
127 # if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
128 /* On Win32: The initial state of unassigned standard file descriptors is
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
129 that they are open but point to an INVALID_HANDLE_VALUE. There is no
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
130 fcntl, and the gnulib replacement fcntl does not support F_GETFL. */
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
131 return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
132 # else
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
133 # ifndef F_GETFL
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
134 # error Please port fcntl to your platform
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
135 # endif
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
136 return 0 <= fcntl (fd, F_GETFL);
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
137 # endif
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
138 }
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
139 #endif
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
140
12337
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
141 static inline void
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
142 flush_stdout (void)
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
143 {
13324
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
144 #if !_LIBC
12337
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
145 int stdout_fd;
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
146
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
147 # if GNULIB_FREOPEN_SAFER
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
148 /* Use of gnulib's freopen-safer module normally ensures that
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
149 fileno (stdout) == 1
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
150 whenever stdout is open. */
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
151 stdout_fd = STDOUT_FILENO;
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
152 # else
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
153 /* POSIX states that fileno (stdout) after fclose is unspecified. But in
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
154 practice it is not a problem, because stdout is statically allocated and
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
155 the fd of a FILE stream is stored as a field in its allocated memory. */
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
156 stdout_fd = fileno (stdout);
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
157 # endif
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
158 /* POSIX states that fflush (stdout) after fclose is unspecified; it
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
159 is safe in glibc, but not on all other platforms. fflush (NULL)
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
160 is always defined, but too draconian. */
13324
2792eeac632f error: More reliable output on mingw.
Bruno Haible <bruno@clisp.org>
parents: 12559
diff changeset
161 if (0 <= stdout_fd && is_open (stdout_fd))
12337
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
162 #endif
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
163 fflush (stdout);
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
164 }
9d131fdf3903 error: account for the possibility of freopen (stdout).
Bruno Haible <bruno@clisp.org>
parents: 11714
diff changeset
165
3550
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
166 static void
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
167 print_errno_message (int errnum)
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
168 {
7232
b307709e3a05 * error.c (error_at_line, print_errno_message): Match libc, after
Eric Blake <ebb9@byu.net>
parents: 7131
diff changeset
169 char const *s;
3550
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
170
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
171 #if defined HAVE_STRERROR_R || _LIBC
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
172 char errbuf[1024];
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
173 # if STRERROR_R_CHAR_P || _LIBC
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
174 s = __strerror_r (errnum, errbuf, sizeof errbuf);
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
175 # else
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
176 if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0)
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
177 s = errbuf;
7232
b307709e3a05 * error.c (error_at_line, print_errno_message): Match libc, after
Eric Blake <ebb9@byu.net>
parents: 7131
diff changeset
178 else
b307709e3a05 * error.c (error_at_line, print_errno_message): Match libc, after
Eric Blake <ebb9@byu.net>
parents: 7131
diff changeset
179 s = 0;
3550
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
180 # endif
7232
b307709e3a05 * error.c (error_at_line, print_errno_message): Match libc, after
Eric Blake <ebb9@byu.net>
parents: 7131
diff changeset
181 #else
b307709e3a05 * error.c (error_at_line, print_errno_message): Match libc, after
Eric Blake <ebb9@byu.net>
parents: 7131
diff changeset
182 s = strerror (errnum);
3550
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
183 #endif
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
184
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
185 #if !_LIBC
7232
b307709e3a05 * error.c (error_at_line, print_errno_message): Match libc, after
Eric Blake <ebb9@byu.net>
parents: 7131
diff changeset
186 if (! s)
3550
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
187 s = _("Unknown system error");
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
188 #endif
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
189
4500
cdb224406ea7 [!USE_IN_LIBIO]: Omit this case; assume USE_IN_LIBIO is 1.
Paul Eggert <eggert@cs.ucla.edu>
parents: 4072
diff changeset
190 #if _LIBC
7088
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
191 __fxprintf (NULL, ": %s", s);
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
192 #else
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
193 fprintf (stderr, ": %s", s);
3550
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
194 #endif
c18604dda2d7 (strerror_r): Do not declare unless !_LIBC.
Jim Meyering <jim@meyering.net>
parents: 3446
diff changeset
195 }
3446
849a40d65bee Update from GNU libc.
Jim Meyering <jim@meyering.net>
parents: 2984
diff changeset
196
849a40d65bee Update from GNU libc.
Jim Meyering <jim@meyering.net>
parents: 2984
diff changeset
197 static void
849a40d65bee Update from GNU libc.
Jim Meyering <jim@meyering.net>
parents: 2984
diff changeset
198 error_tail (int status, int errnum, const char *message, va_list args)
849a40d65bee Update from GNU libc.
Jim Meyering <jim@meyering.net>
parents: 2984
diff changeset
199 {
4695
4cd5b2420ecf Assume vprintf.
Paul Eggert <eggert@cs.ucla.edu>
parents: 4680
diff changeset
200 #if _LIBC
3446
849a40d65bee Update from GNU libc.
Jim Meyering <jim@meyering.net>
parents: 2984
diff changeset
201 if (_IO_fwide (stderr, 0) > 0)
849a40d65bee Update from GNU libc.
Jim Meyering <jim@meyering.net>
parents: 2984
diff changeset
202 {
4695
4cd5b2420ecf Assume vprintf.
Paul Eggert <eggert@cs.ucla.edu>
parents: 4680
diff changeset
203 # define ALLOCA_LIMIT 2000
3446
849a40d65bee Update from GNU libc.
Jim Meyering <jim@meyering.net>
parents: 2984
diff changeset
204 size_t len = strlen (message) + 1;
7088
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
205 wchar_t *wmessage = NULL;
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
206 mbstate_t st;
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
207 size_t res;
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
208 const char *tmp;
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
209 bool use_malloc = false;
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
210
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
211 while (1)
12421
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
212 {
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
213 if (__libc_use_alloca (len * sizeof (wchar_t)))
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
214 wmessage = (wchar_t *) alloca (len * sizeof (wchar_t));
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
215 else
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
216 {
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
217 if (!use_malloc)
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
218 wmessage = NULL;
7088
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
219
12421
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
220 wchar_t *p = (wchar_t *) realloc (wmessage,
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
221 len * sizeof (wchar_t));
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
222 if (p == NULL)
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
223 {
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
224 free (wmessage);
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
225 fputws_unlocked (L"out of memory\n", stderr);
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
226 return;
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
227 }
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
228 wmessage = p;
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
229 use_malloc = true;
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
230 }
3446
849a40d65bee Update from GNU libc.
Jim Meyering <jim@meyering.net>
parents: 2984
diff changeset
231
12421
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
232 memset (&st, '\0', sizeof (st));
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
233 tmp = message;
7088
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
234
12421
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
235 res = mbsrtowcs (wmessage, &tmp, len, &st);
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
236 if (res != len)
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
237 break;
7088
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
238
12421
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
239 if (__builtin_expect (len >= SIZE_MAX / 2, 0))
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
240 {
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
241 /* This really should not happen if everything is fine. */
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
242 res = (size_t) -1;
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
243 break;
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
244 }
7088
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
245
12421
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
246 len *= 2;
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
247 }
7088
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
248
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
249 if (res == (size_t) -1)
12421
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
250 {
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
251 /* The string cannot be converted. */
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
252 if (use_malloc)
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
253 {
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
254 free (wmessage);
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
255 use_malloc = false;
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
256 }
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
257 wmessage = (wchar_t *) L"???";
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
258 }
3446
849a40d65bee Update from GNU libc.
Jim Meyering <jim@meyering.net>
parents: 2984
diff changeset
259
849a40d65bee Update from GNU libc.
Jim Meyering <jim@meyering.net>
parents: 2984
diff changeset
260 __vfwprintf (stderr, wmessage, args);
7088
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
261
e3cb6c0685d8 * error.h: Fold in some upstream changes from glibc.
Eric Blake <ebb9@byu.net>
parents: 5848
diff changeset
262 if (use_malloc)
12421
e8d2c6fc33ad Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 12338
diff changeset
263 free (wmessage);
3446
849a40d65bee Update from GNU libc.
Jim Meyering <jim@meyering.net>
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diff changeset
264 }
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265 else
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266 #endif
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267 vfprintf (stderr, message, args);
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268 va_end (args);
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269
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270 ++error_message_count;
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271 if (errnum)
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272 print_errno_message (errnum);
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273 #if _LIBC
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274 __fxprintf (NULL, "\n");
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275 #else
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276 putc ('\n', stderr);
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277 #endif
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278 fflush (stderr);
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279 if (status)
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280 exit (status);
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281 }
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282
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283
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284 /* Print the program name and error message MESSAGE, which is a printf-style
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285 format string with optional args.
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286 If ERRNUM is nonzero, print its corresponding system error message.
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287 Exit with status STATUS if it is nonzero. */
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288 void
398
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289 error (int status, int errnum, const char *message, ...)
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290 {
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291 va_list args;
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292
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293 #if defined _LIBC && defined __libc_ptf_call
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294 /* We do not want this call to be cut short by a thread
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295 cancellation. Therefore disable cancellation for now. */
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296 int state = PTHREAD_CANCEL_ENABLE;
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297 __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
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298 0);
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299 #endif
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300
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301 flush_stdout ();
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302 #ifdef _LIBC
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303 _IO_flockfile (stderr);
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304 #endif
398
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305 if (error_print_progname)
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306 (*error_print_progname) ();
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307 else
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308 {
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309 #if _LIBC
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310 __fxprintf (NULL, "%s: ", program_name);
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311 #else
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312 fprintf (stderr, "%s: ", program_name);
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313 #endif
398
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314 }
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315
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316 va_start (args, message);
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317 error_tail (status, errnum, message, args);
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318
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319 #ifdef _LIBC
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320 _IO_funlockfile (stderr);
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321 # ifdef __libc_ptf_call
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322 __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
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323 # endif
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324 #endif
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325 }
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326
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327 /* Sometimes we want to have at most one error per line. This
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328 variable controls whether this mode is selected or not. */
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329 int error_one_per_line;
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330
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331 void
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332 error_at_line (int status, int errnum, const char *file_name,
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333 unsigned int line_number, const char *message, ...)
573
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334 {
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335 va_list args;
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336
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337 if (error_one_per_line)
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338 {
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339 static const char *old_file_name;
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340 static unsigned int old_line_number;
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341
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342 if (old_line_number == line_number
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343 && (file_name == old_file_name
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344 || strcmp (old_file_name, file_name) == 0))
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345 /* Simply return and print nothing. */
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346 return;
573
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347
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348 old_file_name = file_name;
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349 old_line_number = line_number;
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350 }
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351
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352 #if defined _LIBC && defined __libc_ptf_call
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353 /* We do not want this call to be cut short by a thread
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354 cancellation. Therefore disable cancellation for now. */
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355 int state = PTHREAD_CANCEL_ENABLE;
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356 __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
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357 0);
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358 #endif
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359
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360 flush_stdout ();
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361 #ifdef _LIBC
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362 _IO_flockfile (stderr);
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363 #endif
573
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364 if (error_print_progname)
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365 (*error_print_progname) ();
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366 else
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367 {
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368 #if _LIBC
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369 __fxprintf (NULL, "%s:", program_name);
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370 #else
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371 fprintf (stderr, "%s:", program_name);
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372 #endif
573
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373 }
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374
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375 #if _LIBC
7131
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376 __fxprintf (NULL, file_name != NULL ? "%s:%d: " : " ",
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377 file_name, line_number);
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378 #else
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379 fprintf (stderr, file_name != NULL ? "%s:%d: " : " ",
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380 file_name, line_number);
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381 #endif
573
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382
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383 va_start (args, message);
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384 error_tail (status, errnum, message, args);
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385
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386 #ifdef _LIBC
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387 _IO_funlockfile (stderr);
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388 # ifdef __libc_ptf_call
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389 __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
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390 # endif
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391 #endif
573
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392 }
1268
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393
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394 #ifdef _LIBC
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395 /* Make the weak alias. */
1289
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396 # undef error
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397 # undef error_at_line
1268
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398 weak_alias (__error, error)
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399 weak_alias (__error_at_line, error_at_line)
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400 #endif