From: Xavier Leroy <Xavier.Leroy@inria.fr>
To: John Carr <jfc@mit.edu>
Cc: caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] Strange crash after switching to first class modules
Date: Thu, 29 Sep 2011 18:35:16 +0200 [thread overview]
Message-ID: <4E849E44.3050002@inria.fr> (raw)
In-Reply-To: <201109291603.p8TG3FBX006930@outgoing.mit.edu>
On 09/29/2011 06:03 PM, John Carr wrote:
> One sentence summary: I added a local module generated by
> functor application to an unpacked first class module and
> the runtime blew up. [...]
> The last active code in my source is a function that looks like this
> in relevant part:
>
> let format chan x =
> let f = Printf.fprintf chan "%s %d" in
> begin match x with
> | W (n,false) -> f "string" n
> end
>
> Note the partial application of fprintf.
Could you first try to eliminate that partial application of fprintf?
(Inline f at point of call, or eta-expand yourself.) The Printf
module takes a lot of liberties with the type system (ahem), so it is
one of the usual suspects in such a case.
- Xavier Leroy
next prev parent reply other threads:[~2011-09-29 16:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-29 16:03 John Carr
2011-09-29 16:35 ` Xavier Leroy [this message]
2011-09-29 17:03 ` John Carr
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