* 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 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 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
* 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 15:45 ` 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
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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