[Libguestfs] [libnbd PATCH 3/3] ocaml: Typesafe returns for REnum/RFlags

[Richard W.M. Jones]

For this one I'd definitely prefer the UNKNOWN_FLAG of int
trick I think.

Examples of this idea being used in other code:

https://github.com/ocaml/ocaml/blob/0c8e78268821b4949b8574bb1e8ddafa73d19aa7/otherlibs/unix/unix.mli#L96

https://github.com/libguestfs/hivex/blob/77f4ab4f6314457050429ed72b4c609bdfebc89e/generator/generator.ml#L1566

https://libvirt.org/git/?p=libvirt-ocaml.git;a=blob;f=libvirt/libvirt.mli;h=79003923df54997f905040594a3d5f23c056c5f0;hb=HEAD#l797

Rich.

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