Import new gnulib.
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/* Declaration for error-reporting function
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Copyright (C) 1995, 1996, 1997, 2003, 2006, 2008, 2009, 2010 Free Software
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Foundation, Inc.
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Copyright (C) 1995-1997, 2003, 2006, 2008-2013 Free Software Foundation,
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Inc.
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This file is part of the GNU C Library.
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This program is free software: you can redistribute it and/or modify
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#ifndef _ERROR_H
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#define _ERROR_H 1
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#ifndef __attribute__
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/* The __attribute__ feature is available in gcc versions 2.5 and later.
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The __-protected variants of the attributes 'format' and 'printf' are
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accepted by gcc versions 2.6.4 (effectively 2.7) and later.
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We enable __attribute__ only if these are supported too, because
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We enable _GL_ATTRIBUTE_FORMAT only if these are supported too, because
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gnulib and libintl do '#define printf __printf__' when they override
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the 'printf' function. */
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# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
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# define __attribute__(Spec) /* empty */
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# endif
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
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# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
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#else
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# define _GL_ATTRIBUTE_FORMAT(spec) /* empty */
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Print a message with `fprintf (stderr, FORMAT, ...)';
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/* Print a message with 'fprintf (stderr, FORMAT, ...)';
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if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
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If STATUS is nonzero, terminate the program with `exit (STATUS)'. */
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If STATUS is nonzero, terminate the program with 'exit (STATUS)'. */
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extern void error (int __status, int __errnum, const char *__format, ...)
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__attribute__ ((__format__ (__printf__, 3, 4)));
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_GL_ATTRIBUTE_FORMAT ((__printf__, 3, 4));
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extern void error_at_line (int __status, int __errnum, const char *__fname,
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unsigned int __lineno, const char *__format, ...)
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__attribute__ ((__format__ (__printf__, 5, 6)));
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_GL_ATTRIBUTE_FORMAT ((__printf__, 5, 6));
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/* If NULL, error will flush stdout, then print on stderr the program
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name, a colon and a space. Otherwise, error will call this
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function without parameters instead. */
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extern void (*error_print_progname) (void);
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/* This variable is incremented each time `error' is called. */
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/* This variable is incremented each time 'error' is called. */
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extern unsigned int error_message_count;
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/* Sometimes we want to have at most one error per line. This
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