odoc cannot handle alerts for type aliases

[favonia]

odoc seems to have trouble handling deprecation alerts attached to type aliases, for example this one:

type int2 = int [@@ocaml.alert deprecated "Just use int"]

Here's odoc's complaint:

File "src/Test.mli", line 1, characters 16-57:
Warning: Alert deprecated not expected here.

However, the OCaml compiler seems to accept and handle such an alert perfectly.

[jonludlam]

Thanks for reporting this! It does indeed look like our issue. I'll take a look and see what's required to fix this.