[igt-dev] [PATCH i-g-t v4 01/11] lib/igt_dummyload: add igt_cork

[Chris Wilson]

Quoting Antonio Argenziano (2018-02-21 23:19:37)
> +struct igt_cork {
> +       enum igt_cork_type type;
> +
> +       union __cork {
> +               int fd;
> +
> +               struct igt_cork_vgem vgem;
> +               struct igt_cork_sw_sync sw_sync;
> +       } cork;

Anonymous unions ftw.

Then instead of needing vgem_cork->device, you can just write
cork->vgem.device.
-Chris