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

static void print(const char *s)
{
	write(2, s, strlen(s));
}

static unsigned int fmt_uint(char *s, int n)
{
	unsigned int l = 1, q = n;

	while (q > 9) { ++l; q /= 10; }
	if (s) {
		s += l;
		do { *--s = '0' + (n % 10); n /= 10; } while (n);
	}
	return l;
}

void __assert_fail(const char *expr, const char *file, int line, const char *func)
{
	char buf[10];

	print("Assertion failed: ");
	print(expr);
	print(" (");
	print(file);
	print(": ");
	print(func);
	print(": ");
	write(2, buf, fmt_uint(buf, line));
	print(")\n");
	fflush(NULL);
	abort();
}