extern void abort(void);
extern void exit(int);
int bar(void);
int baz(void);

struct foo {
    struct foo *next;
};

struct foo *test(struct foo *node) {
    while (node) {
        if (bar() && !baz())
            break;
        node = node->next;
    }
    return node;
}

int bar(void) {
    return 0;
}

int baz(void) {
    return 0;
}

int main(void) {
    struct foo a, b, *c;

    a.next = &b;
    b.next = (struct foo *)0;
    c = test(&a);
    if (c)
        abort();
    exit(0);
}
