From: Louis Gesbert <louis.gesbert@laposte.net>

> # exception E' = E;;
> # match E with E' -> true | _ -> false;;
> - : bool = false
>
> This is with Caml 3.08.3, but it doesn't seem to have been corrected in
> earlier versions. Any ideas ? If the structure exception E = F is
> considered useful, a stronger semantics should be attached to it, but is it
> really ?

In general bugs are not corrected in _earlier_ versions :-)
This is fixed in 3.09.

# exception E' = E;;
# match E with E' -> true | _ -> false;;
- : bool = true

Jacques Garrigue