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Re: Emacs-24.3 crash when browse-url
From: |
Stefan Monnier |
Subject: |
Re: Emacs-24.3 crash when browse-url |
Date: |
Tue, 04 Dec 2012 16:21:56 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) |
Paul, can you take a look at this?
>>>>> Debugger entered--Lisp error: (error "binding stack not balanced (serious
>>>>> byte compiler bug)")
>>>>> browse-url-xdg-open("http://www.google.fr" nil)
>>>> M-x disassemble RET browse-url-xdg-open RET
>>> --8<---------------cut here---------------start------------->8---
>>> byte code for browse-url-xdg-open:
>>> doc: Pass the specified URL to the "xdg-open" command. ...
>>> args: (url &optional ignored)
>>> interactive: (browse-url-interactive-arg "URL: ")
>>> 0 constant call-process
>>> 1 constant "xdg-open"
>>> 2 constant nil
>>> 3 constant 0
>>> 4 constant nil
>>> 5 varref url
>>> 6 call 5
>>> 7 return
>>> --8<---------------cut here---------------end--------------->8---
>>
>> Hmm... "binding stack not balanced (serious byte compiler bug)" means
>> that the specpdl stack (the stack of things that need to be unwound,
>> such as unwind-protects and dynamic let bindings) does not have the same
>> height at the end of (presumably) browse-url-xdg-open as it had at
>> the beginning. But as we see above, browse-url-xdg-open does not push
>> nor pop anything to/from that stack (it does push constants onto the
>> bytecode's execution stack, but that's a completely different stack).
> Thanks for explanation.
My pleasure.
>> So, the specpdl stack was somehow messed up, presumably during the
>> execution of browse-url-xdg-open but apparently not by the byte code of
>> browse-url-xdg-open. It could be a problem in `call-process'.
> Ok, here the last working revision:
> --8<---------------cut here---------------start------------->8---
> changeset: 123952:4d87702c495a
> user: Paul Eggert <address@hidden>
> date: Mon Dec 03 13:07:47 2012 -0800
> summary: * bytecode.c, lisp.h (Qbytecode): Remove.
> --8<---------------cut here---------------end--------------->8---
> And the crash reappear when I compile from here:
> --8<---------------cut here---------------start------------->8---
> changeset: 123953:342630a53fea
> user: Paul Eggert <address@hidden>
> date: Mon Dec 03 13:42:12 2012 -0800
> summary: Don't let call-process be a zombie factory.
> --8<---------------cut here---------------end--------------->8---
Aha!
Stefan
- Re: Emacs-24.3 crash when browse-url, (continued)
- Re: Emacs-24.3 crash when browse-url, Andreas Schwab, 2012/12/04
- Re: Emacs-24.3 crash when browse-url, Thierry Volpiatto, 2012/12/04
- Re: Emacs-24.3 crash when browse-url, Andreas Schwab, 2012/12/04
- Re: Emacs-24.3 crash when browse-url, Thierry Volpiatto, 2012/12/04
- Re: Emacs-24.3 crash when browse-url, Stefan Monnier, 2012/12/04
- Re: Emacs-24.3 crash when browse-url, Thierry Volpiatto, 2012/12/04
- Re: Emacs-24.3 crash when browse-url, Stefan Monnier, 2012/12/04
- Re: Emacs-24.3 crash when browse-url, Thierry Volpiatto, 2012/12/04
- Re: Emacs-24.3 crash when browse-url, Andreas Schwab, 2012/12/04
- Re: Emacs-24.3 crash when browse-url, Thierry Volpiatto, 2012/12/05
- Re: Emacs-24.3 crash when browse-url,
Stefan Monnier <=
- Re: Emacs-24.3 crash when browse-url, Paul Eggert, 2012/12/05