From: Gemini Lasswell <gazally@runbox.com>
To: Lars Ingebrigtsen <larsi@gnus.org>
Cc: 28725@debbugs.gnu.org
Subject: bug#28725: 26.0.60; Error when using Edebug on a generator
Date: Mon, 21 Oct 2019 09:29:04 -0700 [thread overview]
Message-ID: <87y2xeawq7.fsf@runbox.com> (raw)
In-Reply-To: <87mudvccq2.fsf@gnus.org> (Lars Ingebrigtsen's message of "Sun, 20 Oct 2019 23:45:57 +0200")
Lars Ingebrigtsen <larsi@gnus.org> writes:
> I'm able to reproduce this bug in Emacs 27.
>
> Does anybody know what's causing this? It's bugging out in the
> `iter-yield' call.
I took a look and I think the problem is that cps--transform-1 doesn't
look inside lambda forms. When Edebug instruments a function, it wraps
the body of the function in a lambda form.
Here's a code sample to reproduce the bug with just eval-buffer, no
Edebug necessary:
;;; -*- lexical-binding: t -*-
(require 'generator)
(iter-defun mycounter (start)
(let ((i 0)
(offset-yield-func (lambda (x) (iter-yield (+ x start)))))
(while t
(funcall offset-yield-func i)
(setq i (1+ i)))))
(defun my-iter-do ()
(let (results
(tally (mycounter 10)))
(dotimes (_ 4)
(push (iter-next tally) results))
results))
(my-iter-do)
prev parent reply other threads:[~2019-10-21 16:29 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-06 19:19 bug#28725: 26.0.60; Error when using Edebug on a generator Gemini Lasswell
2017-10-27 19:35 ` bug#28725: alternative Paul Pogonyshev
2017-10-28 21:18 ` Gemini Lasswell
2019-10-20 21:45 ` bug#28725: 26.0.60; Error when using Edebug on a generator Lars Ingebrigtsen
2019-10-21 16:29 ` Gemini Lasswell [this message]
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