/*************************************************************************\
*                  Copyright (C) Michael Kerrisk, 2026.                   *
*                                                                         *
* This program is free software. You may use, modify, and redistribute it *
* under the terms of the GNU Lesser General Public License as published   *
* by the Free Software Foundation, either version 3 or (at your option)   *
* any later version. This program is distributed without any warranty.    *
* See the files COPYING.lgpl-v3 and COPYING.gpl-v3 for details.           *
\*************************************************************************/

/* error_functions.h

   Header file for error_functions.c.
*/
#ifndef ERROR_FUNCTIONS_H
#define ERROR_FUNCTIONS_H

/* Error diagnostic routines */

void errMsg(const char *format, ...);

#ifdef __GNUC__

    /* This macro stops 'gcc -Wall' complaining that "control reaches
       end of non-void function" if we use the following functions to
       terminate main() or some other non-void function. */

#define NORETURN __attribute__ ((__noreturn__))
#else
#define NORETURN
#endif

void errExit(const char *format, ...) NORETURN ;

void err_exit(const char *format, ...) NORETURN ;

void errExitEN(int errnum, const char *format, ...) NORETURN ;

void fatal(const char *format, ...) NORETURN ;

void usageErr(const char *format, ...) NORETURN ;

void cmdLineErr(const char *format, ...) NORETURN ;

#endif