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-rw-r--r--gl/lib/error.h75
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diff --git a/gl/lib/error.h b/gl/lib/error.h
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+/* Declaration for error-reporting function
+ Copyright (C) 1995-1997, 2003, 2006, 2008-2019 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/>. */
+
+#ifndef _ERROR_H
+#define _ERROR_H 1
+
+/* The __attribute__ feature is available in gcc versions 2.5 and later.
+ The __-protected variants of the attributes 'format' and 'printf' are
+ accepted by gcc versions 2.6.4 (effectively 2.7) and later.
+ We enable _GL_ATTRIBUTE_FORMAT only if these are supported too, because
+ gnulib and libintl do '#define printf __printf__' when they override
+ the 'printf' function. */
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
+# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
+#else
+# define _GL_ATTRIBUTE_FORMAT(spec) /* empty */
+#endif
+
+/* On mingw, the flavor of printf depends on whether the extensions module
+ * is in use; the check for <stdio.h> determines the witness macro. */
+#ifndef _GL_ATTRIBUTE_SPEC_PRINTF
+# if GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU
+# define _GL_ATTRIBUTE_SPEC_PRINTF __gnu_printf__
+# else
+# define _GL_ATTRIBUTE_SPEC_PRINTF __printf__
+# endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Print a message with 'fprintf (stderr, FORMAT, ...)';
+ if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
+ If STATUS is nonzero, terminate the program with 'exit (STATUS)'. */
+
+extern void error (int __status, int __errnum, const char *__format, ...)
+ _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF, 3, 4));
+
+extern void error_at_line (int __status, int __errnum, const char *__fname,
+ unsigned int __lineno, const char *__format, ...)
+ _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF, 5, 6));
+
+/* 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. */
+extern void (*error_print_progname) (void);
+
+/* This variable is incremented each time 'error' is called. */
+extern unsigned int error_message_count;
+
+/* Sometimes we want to have at most one error per line. This
+ variable controls whether this mode is selected or not. */
+extern int error_one_per_line;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* error.h */