/* Error handler for noninteractive utilities
- Copyright (C) 1990-1998, 2000-2007, 2009-2010 Free Software Foundation, Inc.
+ Copyright (C) 1990-1998, 2000-2007, 2009-2018 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
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 <http://www.gnu.org/licenses/>. */
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
# 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
function without parameters instead. */
void (*error_print_progname) (void);
-/* This variable is incremented each time `error' is called. */
+/* This variable is incremented each time 'error' is called. */
unsigned int error_message_count;
#ifdef _LIBC
# include <limits.h>
# include <libio/libioP.h>
-/* In GNU libc we want do not want to use the common name `error' directly.
+/* 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)));;
+ __attribute__ ((__format__ (__printf__, 5, 6)));
# define error __error
# define error_at_line __error_at_line
# include <libio/iolibio.h>
-# define fflush(s) INTUSE(_IO_fflush) (s)
+# define fflush(s) _IO_fflush (s)
# undef putc
-# define putc(c, fp) INTUSE(_IO_putc) (c, fp)
+# define putc(c, fp) _IO_putc (c, fp)
# include <bits/libc-lock.h>
# include <fcntl.h>
# include <unistd.h>
-# if !HAVE_DECL_STRERROR_R && STRERROR_R_CHAR_P
+# if (defined _WIN32 || 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
-char *strerror_r ();
+# 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
-/* The calling program should define program_name and set it to the
- name of the executing program. */
-extern char *program_name;
+#define program_name getprogname ()
-# if HAVE_STRERROR_R || defined strerror_r
+# if GNULIB_STRERROR_R_POSIX || HAVE_STRERROR_R || defined strerror_r
# define __strerror_r strerror_r
-# endif /* HAVE_STRERROR_R || defined strerror_r */
+# endif /* GNULIB_STRERROR_R_POSIX || HAVE_STRERROR_R || defined strerror_r */
#endif /* not _LIBC */
-static inline void
+#if !_LIBC
+/* Return non-zero if FD is open. */
+static int
+is_open (int fd)
+{
+# if (defined _WIN32 || 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 && defined F_GETFL
+#if !_LIBC
int stdout_fd;
# if GNULIB_FREOPEN_SAFER
/* 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 && 0 <= fcntl (stdout_fd, F_GETFL))
+ if (0 <= stdout_fd && is_open (stdout_fd))
#endif
fflush (stdout);
}
{
char const *s;
-#if defined HAVE_STRERROR_R || _LIBC
+#if _LIBC || GNULIB_STRERROR_R_POSIX || defined HAVE_STRERROR_R
char errbuf[1024];
-# if STRERROR_R_CHAR_P || _LIBC
+# 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)
#endif
}
-static void
+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)
{
-# define ALLOCA_LIMIT 2000
size_t len = strlen (message) + 1;
wchar_t *wmessage = NULL;
mbstate_t st;
if (res != len)
break;
- if (__builtin_expect (len >= SIZE_MAX / 2, 0))
+ if (__builtin_expect (len >= SIZE_MAX / sizeof (wchar_t) / 2, 0))
{
/* This really should not happen if everything is fine. */
res = (size_t) -1;
else
#endif
vfprintf (stderr, message, args);
- va_end (args);
++error_message_count;
if (errnum)
cancellation. Therefore disable cancellation for now. */
int state = PTHREAD_CANCEL_ENABLE;
__libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
-
0);
#endif
va_start (args, message);
error_tail (status, errnum, message, args);
+ va_end (args);
#ifdef _LIBC
_IO_funlockfile (stderr);
if (old_line_number == line_number
&& (file_name == old_file_name
- || strcmp (old_file_name, file_name) == 0))
+ || (old_file_name != NULL
+ && file_name != NULL
+ && strcmp (old_file_name, file_name) == 0)))
+
/* Simply return and print nothing. */
return;
}
#if _LIBC
- __fxprintf (NULL, file_name != NULL ? "%s:%d: " : " ",
+ __fxprintf (NULL, file_name != NULL ? "%s:%u: " : " ",
file_name, line_number);
#else
- fprintf (stderr, file_name != NULL ? "%s:%d: " : " ",
+ 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);