/* this is another case where phiopt
   would create -signed1bit which is undefined. */
struct {
    int a : 1;
} b;
int *c = (int *)&b, d;
int main() {
    d = c && (b.a = (d < 0) ^ 3);
    if (d != 1)
        __builtin_abort();
    return 0;
}
