error_function.h

#ifndef ERROR_FUNCTIONS_H
#define ERROR_FUNCTIONS_H

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