register_assert_handler(3)

📦 version 4.4.3.1, in fedora 43, fedora 44

💖 register_assert_handler(3) 💖

okay bestie, gather round, because we're deep in the Allegro manual today and this one is genuinely so useful it's not even funny. it's the Allegro game programming library, and this lil function is your personal handler for when an assert decides to throw hands. 🫶

✨ NAME ✨

register_assert_handler</ppurple> — registers a custom handler for assert failures. yes, that's the whole vibe. Allegro game programming library, mwah. 💅

🌸 SYNOPSIS 🌸

#include <allegro.h>

void register_assert_handler(int (*handler)(const char *msg));

look at her. so clean. so simple. an icon. 👑

🦋 DESCRIPTION 🦋

so here's the tea, bestie: you're handing Allegro a custom handler function to deal with assert failures. your callback gets passed a formatted error message in ASCII — that's the whole argument, right there — and then it's decision time:

  • return non-zero if you've processed the error yourself, and Allegro is like "okay cool, she handled it 💅"
  • return zero to just continue on with the default actions

the way that this is so versatile?? you could use it to ignore assert failures entirely (chaotic, love that for you), or to display the error messages on a graphics mode screen without aborting the program. like, you get your cute little error popup AND your program keeps living. main character energy fr fr. 🌈

and the best part — you can call this function even when Allegro has not been initialised. no setup, no vibes check, just go. it's giving low maintenance. ✨

okay now the example, and yes we're copying it exactly, don't @ me:

int show_but_continue(const char *text)
{
    alert("Uh oh...", "Fasten your seat belts.", text,
          "&Go on!", NULL, 'g', 0);
    return 1;
}
...
   register_assert(show_but_continue);
   ASSERT(0); /* This won't crash the program now. */

see how she returns 1? that's the "I got this, bestie" energy. and then ASSERT(0) just... does not crash. iconic. no cap. 🎀

🎀 SEE ALSO 🎀

all the cousins. go read them. iykyk. 💜

heads up bestie: that example really does call register_assert, exactly as written above — copy it character for character and don't go "fixing" it, okay? 🫶

and that's the page!! brought to you by Allegro, version 4.4.3, and register_assert_handler(3) — mwah, love you, bye!! 💖✨🌸🦋🎀👑💅

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