/*      $OpenBSD: malloc_ulimit2.c,v 1.5 2019/06/12 11:31:36 bluhm Exp $        */

/* Public Domain, 2006, Otto Moerbeek <otto@drijf.net> */

#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <err.h>
#include <stdlib.h>
#include <stdio.h>

#define FACTOR  1024

/* This test takes forever with junking turned on. */
char *malloc_options = "jj";

int
main()
{
        struct rlimit lim;
        size_t sz;
        int i;
        void *p;

        if (getrlimit(RLIMIT_DATA, &lim) == -1)
                err(1, "getrlimit");

        sz = lim.rlim_cur / FACTOR;

        for (i = 0; ; i++) {
                size_t len = (sz-i) * FACTOR;
                p = malloc(len);
                if (p != NULL) {
                        free(p);
                        break;
                }
        }
        i += 10;
        for (; i >= 0; i--) {
                size_t len = (sz-i) * FACTOR;
                p = malloc(len);
                free(p);
                free(malloc(4096));
        }
        return (0);
}