From: David Allsopp <dra-news@metastack.com>
To: immanuel litzroth <ilitzroth@gmail.com>,
OCaML List Mailing <caml-list@inria.fr>
Subject: RE: [Caml-list] Raising invalid_argument with a constructed string.
Date: Mon, 28 Nov 2016 15:43:57 +0000 [thread overview]
Message-ID: <E51C5B015DBD1348A1D85763337FB6D90135535BB7@Remus.metastack.local> (raw)
In-Reply-To: <CAJjmLU4n0NVWzzCQ6-P+R1Neg0Er7gUQFJYNeHfLja7VbzEhAA@mail.gmail.com>
immanuel litzroth wrote:
> caml_invalid_argument(str) is no return and does not free it's
> argument.
> So calling it with a string constructed dynamically will mean it'll never
> get freed.
> I could construct an ocaml string and pass that to caml_raise_with_arg,
> but I don't seem to be able to get to the caml_exn_Invalid_argument from
> c. Am I missing something?
Possibly - it's surprising that you want dynamic strings with an exception such as Invalid_argument which is never supposed to be caught and similarly with Failure where you shouldn't be matching on the string argument.
At a push, you can retrieve the Invalid_argument exception from caml_global_data (see byterun/fail.c), but that is essentially hacking the runtime to do so...
David
next prev parent reply other threads:[~2016-11-28 15:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-28 14:39 immanuel litzroth
2016-11-28 15:43 ` David Allsopp [this message]
2016-11-28 15:50 ` Gabriel Scherer
2016-11-29 10:21 ` immanuel litzroth
2016-12-03 13:20 ` Richard W.M. Jones
2016-12-03 14:00 ` immanuel litzroth
2016-12-03 19:36 ` Richard W.M. Jones
2016-12-03 19:44 ` Gabriel Scherer
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