/* { dg-additional-options "-fpermissive" } */

typedef union {
    long l;
    struct {
        char b3, b2, b1, b0;
    } c;
} T;

f(T u) {
    ++u.c.b0;
    ++u.c.b3;
    return (u.c.b1 != 2 || u.c.b2 != 2);
}

main() {
    T u;
    u.c.b1 = 2;
    u.c.b2 = 2;
    u.c.b0 = ~0;
    u.c.b3 = ~0;
    if (f(u))
        abort();
    exit(0);
}
