<b_jonas> slashlearn euclid//Euclid is a short geeky game in which the goal is to do Euclidean compass and straightedge constructions in as few steps as possible. It runs in the browser, found at "http://www.euclidthegame.com/". It was popular among #esoteric regulars in 2016-07.

#include "zz.h"
#include "main.h"

#include <stdio.h>
#include <stdlib.h>

void omgwtf_this_cant_be_happening(const char *file, unsigned long line) {
	fprintf(stderr, "%s: %s:%lu: error message\n", Prog, file, line);
	abort();
}