static struct {
        int x;
        struct {
                int z;
                int w;
        } y;
} a = { .y.z = 1, .y.w = 2, };

static struct {int x, y, z;} w[2] = {
        {.x = 1, .y = 2, .z = 3},
        {.x = 1, .y = 2, .z = 3}
};

/*
 * check-name: field overlap
 */