Beschreibung	 bisect seems to have trouble when '<<' and '>>' appear in comments.
let _ = Bisect.Runtime.init "foo.ml"
The constructor for B has disappeared!
camlp4 will complain, reporting that a quotation is not terminated.
Well, I have to made public apologies for the mistake in the previous note.
As explained by Nicolas Pouillard, the reported behaviour is indeed expected.
let () = print_endline (* " ABC DEF *) " *) "abc"
with a note warning the Bisect user of possible camlp4 interactions.