#include "param.h"

#include "types.h"

#include "stat.h"

#include "user.h"

#include "syscall.h"

#include "traps.h"

#define TEST_NAME "crowd_wildpointer"

#include "318_test-tapish.h"

#define STKSIZE 1024

#define ARG ((void *)0x15410DE0U)

/*Authors: Jose and Emily*/

/*test that bad dereferences don't kill the whole process*/

static void

goodie(void *a) {

while(1){yield(-1);}

}

static void

baddie(void *a) {

int *addr = (int *) 0xdeadbea7;

TEST_DIAG("%d", *addr);

TEST_FAIL("Baddie wasn't killed");

while(1);

}

int main() {

int i;

void *s;

TEST_STRT(1);

for (i = 0; i < 10; i++) {

TEST_EXIT_IF((s = malloc(STKSIZE)) == 0, "oom");

s += STKSIZE;

if (i == 0) {

TEST_EXIT_IF(tspawn(s, baddie, ARG) < 0,

"spawn fail at %d", i);

} else {

TEST_EXIT_IF(tspawn(s, goodie, ARG) < 0, "spawn fail at %d", i);

}

sleep(10);

}

TEST_DIAG("You can see the thread being killed well"\

" before this test finishes.");

TEST_FINI();

exit();

}