* bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’
@ 2020-08-25 12:37 AC
2020-10-16 8:29 ` Lars Ingebrigtsen
0 siblings, 1 reply; 12+ messages in thread
From: AC @ 2020-08-25 12:37 UTC (permalink / raw)
To: 43037
I compile emacs off the emacs-27 branch. On those machines, opening certain file types results in the above error.
For .js files for instance, the full error is
Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’ for ‘font-lock-comment-end-skip’ (fallback source eval - js-mode compiled with CC Mode 5.34 but loaded with 5.34.1): (error "‘c-font-lock-comment-end-skip’ got no (prior) value in js-mode (might be a cyclic reference)")
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’
2020-08-25 12:37 bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’ AC
@ 2020-10-16 8:29 ` Lars Ingebrigtsen
2020-10-16 10:14 ` AC
0 siblings, 1 reply; 12+ messages in thread
From: Lars Ingebrigtsen @ 2020-10-16 8:29 UTC (permalink / raw)
To: AC; +Cc: 43037
AC <achirvasub@gmail.com> writes:
> I compile emacs off the emacs-27 branch. On those machines, opening
> certain file types results in the above error.
>
> For .js files for instance, the full error is
>
> Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’ for
> ‘font-lock-comment-end-skip’ (fallback source eval - js-mode compiled
> with CC Mode 5.34 but loaded with 5.34.1): (error
> "‘c-font-lock-comment-end-skip’ got no (prior) value in js-mode (might
> be a cyclic reference)")
(This bug report unfortunately got no attention at the time.)
I'm unable to reproduce this bug in Emacs 27 or Emacs 28. Do you have a
recipe for reproducing this bug, starting from "emacs -Q"?
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’
2020-10-16 8:29 ` Lars Ingebrigtsen
@ 2020-10-16 10:14 ` AC
2020-10-16 10:45 ` Eli Zaretskii
0 siblings, 1 reply; 12+ messages in thread
From: AC @ 2020-10-16 10:14 UTC (permalink / raw)
To: Lars Ingebrigtsen; +Cc: 43037
On October 16, 2020 4:29:18 AM EDT, Lars Ingebrigtsen <larsi@gnus.org> wrote:
>AC <achirvasub@gmail.com> writes:
>
>> I compile emacs off the emacs-27 branch. On those machines, opening
>> certain file types results in the above error.
>>
>> For .js files for instance, the full error is
>>
>> Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’ for
>> ‘font-lock-comment-end-skip’ (fallback source eval - js-mode compiled
>> with CC Mode 5.34 but loaded with 5.34.1): (error
>> "‘c-font-lock-comment-end-skip’ got no (prior) value in js-mode
>(might
>> be a cyclic reference)")
>
>(This bug report unfortunately got no attention at the time.)
>
>I'm unable to reproduce this bug in Emacs 27 or Emacs 28. Do you have
>a
>recipe for reproducing this bug, starting from "emacs -Q"?
>
Yes.
Literally seconds ago I compiled emacs-27, started it up with 'emacs -Q' and then visited the blank file '~/new.js'. That error popped up.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’
2020-10-16 10:14 ` AC
@ 2020-10-16 10:45 ` Eli Zaretskii
2020-10-16 13:35 ` AC
2020-10-16 14:43 ` Alan Mackenzie
0 siblings, 2 replies; 12+ messages in thread
From: Eli Zaretskii @ 2020-10-16 10:45 UTC (permalink / raw)
To: AC, Alan Mackenzie; +Cc: larsi, 43037
> Date: Fri, 16 Oct 2020 06:14:17 -0400
> From: AC <achirvasub@gmail.com>
> Cc: 43037@debbugs.gnu.org
>
> Literally seconds ago I compiled emacs-27, started it up with 'emacs -Q' and then visited the blank file '~/new.js'. That error popped up.
I cannot reproduce this with stock Emacs 27.1, but I can reproduce
with the current emacs-27 branch. The more detailed error message is
this:
Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’ for ‘font-lock-comment-end-skip’ (fallback source eval - js-mode compiled with CC Mode 5.34 but loaded with 5.34.1): (error "‘c-font-lock-comment-end-skip’ got no (prior) value in js-mode (might be a cyclic reference)")
Alan, can you take a look, please?
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’
2020-10-16 10:45 ` Eli Zaretskii
@ 2020-10-16 13:35 ` AC
2020-10-16 14:43 ` Alan Mackenzie
1 sibling, 0 replies; 12+ messages in thread
From: AC @ 2020-10-16 13:35 UTC (permalink / raw)
To: Eli Zaretskii, Alan Mackenzie; +Cc: larsi, 43037
Thank you for confirming it happens!
Some additional info: I can reproduce this consistently on 3 machines, all running Ubuntu (20.04 and 18.04); the procedure is the same on all of them (compile the current emacs-27 branch from the repo). I don't know if this (the Ubuntu base) matters..
On the other hand, the "standard" Emacs 27.1 that comes with Arch Linux does not exhibit this.
On October 16, 2020 6:45:34 AM EDT, Eli Zaretskii <eliz@gnu.org> wrote:
>> Date: Fri, 16 Oct 2020 06:14:17 -0400
>> From: AC <achirvasub@gmail.com>
>> Cc: 43037@debbugs.gnu.org
>>
>> Literally seconds ago I compiled emacs-27, started it up with 'emacs
>-Q' and then visited the blank file '~/new.js'. That error popped up.
>
>I cannot reproduce this with stock Emacs 27.1, but I can reproduce
>with the current emacs-27 branch. The more detailed error message is
>this:
>
>Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’ for
>‘font-lock-comment-end-skip’ (fallback source eval - js-mode compiled
>with CC Mode 5.34 but loaded with 5.34.1): (error
>"‘c-font-lock-comment-end-skip’ got no (prior) value in js-mode (might
>be a cyclic reference)")
>
>Alan, can you take a look, please?
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’
2020-10-16 10:45 ` Eli Zaretskii
2020-10-16 13:35 ` AC
@ 2020-10-16 14:43 ` Alan Mackenzie
2020-10-16 15:38 ` AC
2020-10-16 15:45 ` Eli Zaretskii
1 sibling, 2 replies; 12+ messages in thread
From: Alan Mackenzie @ 2020-10-16 14:43 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: larsi, AC, 43037
Hello, Eli and AC.
On Fri, Oct 16, 2020 at 13:45:34 +0300, Eli Zaretskii wrote:
> > Date: Fri, 16 Oct 2020 06:14:17 -0400
> > From: AC <achirvasub@gmail.com>
> > Cc: 43037@debbugs.gnu.org
> > Literally seconds ago I compiled emacs-27, started it up with 'emacs
> > -Q' and then visited the blank file '~/new.js'. That error popped
> > up.
> I cannot reproduce this with stock Emacs 27.1, but I can reproduce
> with the current emacs-27 branch. The more detailed error message is
> this:
> Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’ for
> ‘font-lock-comment-end-skip’ (fallback source eval - js-mode
> compiled with CC Mode 5.34 but loaded with 5.34.1): (error
> "‘c-font-lock-comment-end-skip’ got no (prior) value in js-mode
> (might be a cyclic reference)")
> Alan, can you take a look, please?
Yes, I think the problem is precisely what the error message said.
js-mode.el was compiled (quite a long time ago) when c-version was still
5.34, but since then c-version has become 5.34.1. So their is a clash
between what js-mode.el was compiled with and the CC Mode current in the
Emacs version.
To resolve this, I think deleting lisp/progmodes/js-mode.elc and
compiling lisp/progmodes/js-mode.el again should sort out the problem.
This problem has happened more than once. I think the solution should
be in the Makefile to add a dependency of js-mode.elc on cc-defs.el.
--
Alan Mackenzie (Nuremberg, Germany).
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’
2020-10-16 14:43 ` Alan Mackenzie
@ 2020-10-16 15:38 ` AC
2020-10-16 16:04 ` Alan Mackenzie
2020-10-16 15:45 ` Eli Zaretskii
1 sibling, 1 reply; 12+ messages in thread
From: AC @ 2020-10-16 15:38 UTC (permalink / raw)
To: Alan Mackenzie, Eli Zaretskii; +Cc: larsi, 43037
Thank you!
Quick request for clarification:
On October 16, 2020 10:43:53 AM EDT, Alan Mackenzie <acm@muc.de> wrote:
>Hello, Eli and AC.
>
>On Fri, Oct 16, 2020 at 13:45:34 +0300, Eli
>Yes, I think the problem is precisely what the error message said.
>js-mode.el was compiled (quite a long time ago) when c-version was
>still
>5.34, but since then c-version has become 5.34.1. So their is a clash
>between what js-mode.el was compiled with and the CC Mode current in
>the
>Emacs version.
>
>To resolve this, I think deleting lisp/progmodes/js-mode.elc and
>compiling lisp/progmodes/js-mode.el again should sort out the problem.
>
Were all instances of 'js-mode' in the above-quoted message meant to be 'js' instead?
I have js.{el,elc} in my clone of the repo, but no js-mode* at all (anywhere in my homedir, for that matter).
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’
2020-10-16 14:43 ` Alan Mackenzie
2020-10-16 15:38 ` AC
@ 2020-10-16 15:45 ` Eli Zaretskii
2020-10-16 16:32 ` Alan Mackenzie
1 sibling, 1 reply; 12+ messages in thread
From: Eli Zaretskii @ 2020-10-16 15:45 UTC (permalink / raw)
To: Alan Mackenzie; +Cc: larsi, achirvasub, 43037
> Date: Fri, 16 Oct 2020 14:43:53 +0000
> Cc: AC <achirvasub@gmail.com>, larsi@gnus.org, 43037@debbugs.gnu.org
> From: Alan Mackenzie <acm@muc.de>
>
> > Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’ for
> > ‘font-lock-comment-end-skip’ (fallback source eval - js-mode
> > compiled with CC Mode 5.34 but loaded with 5.34.1): (error
> > "‘c-font-lock-comment-end-skip’ got no (prior) value in js-mode
> > (might be a cyclic reference)")
>
> > Alan, can you take a look, please?
>
> Yes, I think the problem is precisely what the error message said.
> js-mode.el was compiled (quite a long time ago) when c-version was still
> 5.34, but since then c-version has become 5.34.1. So their is a clash
> between what js-mode.el was compiled with and the CC Mode current in the
> Emacs version.
>
> To resolve this, I think deleting lisp/progmodes/js-mode.elc and
> compiling lisp/progmodes/js-mode.el again should sort out the problem.
You are right.
> This problem has happened more than once. I think the solution should
> be in the Makefile to add a dependency of js-mode.elc on cc-defs.el.
Yes, please. On the emacs-27 branch, please.
Thanks.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’
2020-10-16 15:38 ` AC
@ 2020-10-16 16:04 ` Alan Mackenzie
2020-10-16 16:08 ` AC
0 siblings, 1 reply; 12+ messages in thread
From: Alan Mackenzie @ 2020-10-16 16:04 UTC (permalink / raw)
To: AC; +Cc: 43037, larsi
Hello, AC.
On Fri, Oct 16, 2020 at 11:38:28 -0400, AC wrote:
> Thank you!
> Quick request for clarification:
> On October 16, 2020 10:43:53 AM EDT, Alan Mackenzie <acm@muc.de> wrote:
> >Hello, Eli and AC.
> >On Fri, Oct 16, 2020 at 13:45:34 +0300, Eli
> >Yes, I think the problem is precisely what the error message said.
> >js-mode.el was compiled (quite a long time ago) when c-version was
> >still
> >5.34, but since then c-version has become 5.34.1. So their is a clash
> >between what js-mode.el was compiled with and the CC Mode current in
> >the
> >Emacs version.
> >To resolve this, I think deleting lisp/progmodes/js-mode.elc and
> >compiling lisp/progmodes/js-mode.el again should sort out the problem.
> Were all instances of 'js-mode' in the above-quoted message meant to be 'js' instead?
Apologies. js-mode should indeed have been js, as in js.el and js.elc.
> I have js.{el,elc} in my clone of the repo, but no js-mode* at all (anywhere in my homedir, for that matter).
--
Alan Mackenzie (Nuremberg, Germany).
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’
2020-10-16 16:04 ` Alan Mackenzie
@ 2020-10-16 16:08 ` AC
2020-10-16 20:04 ` Alan Mackenzie
0 siblings, 1 reply; 12+ messages in thread
From: AC @ 2020-10-16 16:08 UTC (permalink / raw)
To: Alan Mackenzie; +Cc: 43037, larsi
On October 16, 2020 12:04:06 PM EDT, Alan Mackenzie <acm@muc.de> wrote:
>
>> Were all instances of 'js-mode' in the above-quoted message meant to
>be 'js' instead?
>
>Apologies. js-mode should indeed have been js, as in js.el and js.elc.
>
Thank you!
I can confirm your suggestion works fine: simply touching lisp/progmodes/js.el to change its timestamp induced the build system to recompile it, and now the error's gone.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’
2020-10-16 15:45 ` Eli Zaretskii
@ 2020-10-16 16:32 ` Alan Mackenzie
0 siblings, 0 replies; 12+ messages in thread
From: Alan Mackenzie @ 2020-10-16 16:32 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: larsi, achirvasub, 43037
Hello, Eli.
On Fri, Oct 16, 2020 at 18:45:43 +0300, Eli Zaretskii wrote:
> > Date: Fri, 16 Oct 2020 14:43:53 +0000
> > Cc: AC <achirvasub@gmail.com>, larsi@gnus.org, 43037@debbugs.gnu.org
> > From: Alan Mackenzie <acm@muc.de>
[ .... ]
> > To resolve this, I think deleting lisp/progmodes/js-mode.elc and
> > compiling lisp/progmodes/js-mode.el again should sort out the problem.
> You are right.
> > This problem has happened more than once. I think the solution should
> > be in the Makefile to add a dependency of js-mode.elc on cc-defs.el.
> Yes, please. On the emacs-27 branch, please.
DONE.
> Thanks.
--
Alan Mackenzie (Nuremberg, Germany).
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’
2020-10-16 16:08 ` AC
@ 2020-10-16 20:04 ` Alan Mackenzie
0 siblings, 0 replies; 12+ messages in thread
From: Alan Mackenzie @ 2020-10-16 20:04 UTC (permalink / raw)
To: AC; +Cc: 43037-done, larsi
Hello, AC.
On Fri, Oct 16, 2020 at 12:08:28 -0400, AC wrote:
> On October 16, 2020 12:04:06 PM EDT, Alan Mackenzie <acm@muc.de> wrote:
> >> Were all instances of 'js-mode' in the above-quoted message meant
> >> to be 'js' instead?
> >Apologies. js-mode should indeed have been js, as in js.el and js.elc.
> Thank you!
> I can confirm your suggestion works fine: simply touching
> lisp/progmodes/js.el to change its timestamp induced the build system
> to recompile it, and now the error's gone.
That's great! I've put the amendment into the emacs-27 branch
Makefile.in, as discussed with Eli, so I'm closing the bug with this
post.
--
Alan Mackenzie (Nuremberg, Germany).
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2020-10-16 20:04 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-08-25 12:37 bug#43037: Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’ AC
2020-10-16 8:29 ` Lars Ingebrigtsen
2020-10-16 10:14 ` AC
2020-10-16 10:45 ` Eli Zaretskii
2020-10-16 13:35 ` AC
2020-10-16 14:43 ` Alan Mackenzie
2020-10-16 15:38 ` AC
2020-10-16 16:04 ` Alan Mackenzie
2020-10-16 16:08 ` AC
2020-10-16 20:04 ` Alan Mackenzie
2020-10-16 15:45 ` Eli Zaretskii
2020-10-16 16:32 ` Alan Mackenzie
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