ocaml-cil-1.7.3-6.fc22 fails to build on x86_64 for me because it never finishes. It busy-cycles in cilly.native command. I had to kill a mock job after 15 hours. Provided the koji build takes 12 minutes normally, something is wrong in the compiler probably. Here <http://koji.fedoraproject.org/koji/taskinfo?taskID=7151385> you can see a scratch build.
Created attachment 918456 [details]
Patch to fix unsafe use of Obj.magic
Thanks for the report. This is a known bug fixed upstream, but I did not realize it was the cause for the current failure. Patch attached.
Thanks for the patch. I have added this to the CIL package
in Fedora and will push & build it shortly.