explain_ferror_or_die(3) check stream status and report errors


#include <libexplain/ferror.h>

void explain_ferror_or_die(FILE *fp);


The explain_ferror_or_die function is used to call the ferror(3) system call. On failure an explanation will be printed to stderr, obtained from explain_ferror(3), and then the process terminates by calling exit(EXIT_FAILURE).

This function is intended to be used in a fashion similar to the following example:


It is essential that this function cal be placed as close as possible to the I/O code that has caused the problem, otherwise intervening code could have altered the errno global variable.

The fp, exactly as to be passed to the ferror(3) system call.
This function only returns on success. On failure, prints an explanation and exits.


libexplain version 1.4
Copyright (C) 2008 Peter Miller