explain_ferror_or_die(3)

💖 explain_ferror_or_die(3) 💖

okay bestie, gather round, because we're talking about a lil function from the Library Functions Manual and honestly? it's giving "chaos goblin with a conscience." ✨

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🎀 NAME 🎀

explain_ferror_or_die — check stream status and report errors

no cap, that's the whole vibe. you check the stream, and if it's bad, we say goodbye to this process entirely. 💀

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🌸 SYNOPSIS 🌸

#include <libexplain/ferror.h>
void explain_ferror_or_die(FILE *fp);

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✨ DESCRIPTION ✨

so the tea is: explain_ferror_or_die 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). and that's it, that's the whole life cycle. iconic, honestly. 👑

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

explain_ferror_or_die(fp);

🚨 lowkey the most important part, bestie: it is essential that this function call 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. like, do NOT go wandering. the closer, the better. periodt. 💅

fp — the fp, exactly as to be passed to the ferror(3) system call. literally hand it over exactly how it's supposed to be handed over. no editing, no remixing. 🙈

Returns: this function only returns on success. on failure, it prints an explanation and exits. so if you see it come back? that's a win, queen. 🌈

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🦋 SEE ALSO 🦋

• ferror(3) — check stream status
• explain_ferror(3) — explain ferror(3) errors
• exit(2) — terminate the calling process

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👑 COPYRIGHT 👑

libexplain version 1.4 Copyright (C) 2008 Peter Miller

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and that's the whole page, bestie!! mwah 💖 this was explain_ferror_or_die(3) from the Library Functions Manual, brought to you by libexplain version 1.4, copyright 2008 Peter Miller. slay, stay safe, and keep your error checking close to your I/O. 🎀🦋✨💅