GNU bug report logs - #844
23.0.60; ediff-merge-revision: Buffer exceeds maximum size

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Package: emacs; Reported by: kifer@HIDDEN; Keywords: unreproducible moreinfo; merged with #837, #841, #843, #2706; Done: Lars Ingebrigtsen <larsi@HIDDEN>; Maintainer for emacs is bug-gnu-emacs@HIDDEN.
bug closed, send any further explanations to 2706 <at> debbugs.gnu.org and Martin <nospam@HIDDEN> Request was from Lars Ingebrigtsen <larsi@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
Added tag(s) moreinfo. Request was from Chong Yidong <cyd@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
Disconnected #2705 from all other report(s). Request was from Glenn Morris <rgm@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

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unarchive 837
reopen 837
merge 837 2706
thanks

Reopened, as bug has been reported by another user and reproduced (once) 
by a developer, though method of reproducing it is still uncertain.
Acknowledgement sent to Jason Rumney <jasonr@HIDDEN>:
Extra info received and filed, but not forwarded. Full text available.
Information stored :
bug#844; Package emacs. Full text available.
Merged 837 841 843 844 2705 2706. Request was from Jason Rumney <jasonr@HIDDEN> to control@HIDDEN. Full text available.
bug reopened, originator not changed. Request was from Jason Rumney <jasonr@HIDDEN> to control@HIDDEN. Full text available.
bug unarchived. Request was from Jason Rumney <jasonr@HIDDEN> to control@HIDDEN. Full text available.
bug archived. Request was from Debbugs Internal Request <don@HIDDEN> to internal_control@HIDDEN. Full text available.

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Subject: Re: 23.0.60; ediff-merge-revision: Buffer exceeds maximum size
References: <871w026pyo.fsf@HIDDEN> <48BDD818.7040601@HIDDEN>
From: Chong Yidong <cyd@HIDDEN>
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"Lennart Borgman (gmail)" <lennart.borgman@HIDDEN> writes:

> Chong Yidong wrote:
>> Are you able to reproduce this?
>
> No, unfortunately not. It could be some issues with resources of some
> kind (since I see very strange problems sometimes when the GDI objects
> gets to many), but I really do not know.

Okay.  I'm closing the bug; if you encounter the problem again, we can
re-open it.

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Chong Yidong wrote:
> Are you able to reproduce this?

No, unfortunately not. It could be some issues with resources of some
kind (since I see very strange problems sometimes when the GDI objects
gets to many), but I really do not know.

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Subject: Re: 23.0.60; ediff-merge-revision: Buffer exceeds maximum size
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Are you able to reproduce this?
Notification sent to "Lennart Borgman (gmail)" <lennart.borgman@HIDDEN>:
bug acknowledged by developer. Full text available.
Reply sent to Chong Yidong <cyd@HIDDEN>:
You have taken responsibility. Full text available.

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Subject: Re: 23.0.60; ediff-merge-revision: Buffer exceeds maximum size
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Are you able to reproduce this?
Notification sent to kifer@HIDDEN:
bug acknowledged by developer. Full text available.
Reply sent to Chong Yidong <cyd@HIDDEN>:
You have taken responsibility. Full text available.

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Subject: Re: 23.0.60; ediff-merge-revision: Buffer exceeds maximum size
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Are you able to reproduce this?
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bug acknowledged by developer. Full text available.
Reply sent to Chong Yidong <cyd@HIDDEN>:
You have taken responsibility. Full text available.

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Subject: Re: 23.0.60; ediff-merge-revision: Buffer exceeds maximum size
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Are you able to reproduce this?
Notification sent to kifer@HIDDEN:
bug acknowledged by developer. Full text available.
Reply sent to Chong Yidong <cyd@HIDDEN>:
You have taken responsibility. Full text available.
Tags added: unreproducible Request was from Glenn Morris <rgm@HIDDEN> to control@HIDDEN. Full text available.

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Date: Sun, 31 Aug 2008 20:57:48 -0400
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This bug is not reproducible.
Acknowledgement sent to kifer@HIDDEN:
Extra info received and forwarded to list. Copy sent to Emacs Bugs <bug-gnu-emacs@HIDDEN>.

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Full text available.

Information forwarded to bug-submit-list@HIDDEN, Emacs Bugs <bug-gnu-emacs@HIDDEN>:
bug#844; Package emacs. Full text available.
Merged 837 841 843 844. Request was from Glenn Morris <rgm@HIDDEN> to control@HIDDEN. Full text available.

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Date: Sun, 31 Aug 2008 18:43:54 -0400
From: Michael Kifer <kifer@HIDDEN>
To: "Lennart Borgman (gmail)" <lennart.borgman@HIDDEN>
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Subject: Re: 23.0.60; ediff-merge-revision: Buffer exceeds maximum size
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On Sun, 31 Aug 2008 23:40:13 +0200
"Lennart Borgman (gmail)" <lennart.borgman@HIDDEN> wrote:

> Michael Kifer wrote:
> > 
> > On Sun, 31 Aug 2008 15:40:21 +0200
> > "Lennart Borgman (gmail)" <lennart.borgman@HIDDEN> wrote:
> > 
> >> When I just made a checkout of Emacs from CVS I got a merge conflict
> >> which I used ediff-revision to resolve. I then got the following back
> >> trace when I did "wb" to save the corrected file:
> >>
> >> Debugger entered--Lisp error: (error "Buffer exceeds maximum size")
> >>   call-process("diff" nil #<buffer *ediff-custom-diff*> nil "-c"
> > 
> > This says that the output of diff -c exceeds the buffer size.
> > 
> > It is unclear how this is related to ediff per se, since ediff merely calls
> > call-process with the above command.
> > 
> >> "c:/DOCUME~1/LENNAR~1/LOCALS~1/Temp/ediff282470M"
> >> "c:/ecvsnew/bld/emacs/src/w32term.c")
> >>   apply(call-process "diff" nil #<buffer *ediff-custom-diff*> nil ("-c"
> >> "c:/DOCUME~1/LENNAR~1/LOCALS~1/Temp/ediff282470M"
> >> "c:/ecvsnew/bld/emacs/src/w32term.c"))
> >>   ediff-exec-process("diff" #<buffer *ediff-custom-diff*> synchronize
> >> "-c" "c:/DOCUME~1/LENNAR~1/LOCALS~1/Temp/ediff282470M"
> >> "c:/ecvsnew/bld/emacs/src/w32term.c")
> >>   ediff-compute-custom-diffs-maybe()
> >>   ediff-save-buffer(nil)
> >>   call-interactively(ediff-save-buffer nil nil)
> >>
> >> Looking into ediff-custom-diff I can see there is some problem with ^M:
> > 
> > Can you explain what the problem is? It is unclear from the included text below.
> 
> Sorry, I thought the part of the output below should show it, but of
> course the ^M characters I saw is gone here...
> 
> Lines somewhere below the middle of the output below had extra ^M at the
> end of them.
> 
> I can't reproduce the problem now, maybe it was some kind of temporary
> problem - perhaps a bad checkin to the CVS at that time?

I don't know -haven't seen this. But the main problem seems to have been that
diff -c produced a very large buffer, although I can't imagine  how big it
could have been in order to cause the "Buffer exceeds maximum size" error.
In any case, it seems to be a problem with diff or call-process, if at
all.

> > In any case, I deed to be able to reproduce it in order to be able to determine
> > if something needs to be fixed in ediff. Right now it does not look like
> > an ediff problem.
> > 
> > michael
> > 
> > 
> >> ! 	emacs_event->part = scroll_bar_handle;
> >> ! 	y = 0;
> >> ! 	break;
> >>         case SB_BOTTOM:
> >> ! 	emacs_event->part = scroll_bar_handle;
> >> ! 	y = top_range;
> >> ! 	break;
> >>         case SB_THUMBTRACK:
> >>         case SB_THUMBPOSITION:
> >> ! 	if (VERTICAL_SCROLL_BAR_TOP_RANGE (f, XINT (bar->height)) <= 0xffff)
> >>             y = HIWORD (msg->msg.wParam);
> >>
> >> ! 	bar->dragging = Qt;
> >>
> >> ! 	emacs_event->part = scroll_bar_handle;
> >>
> >>
> >>
> >> ! 	/* "Silently" update current position.  */
> >>
> >> ! 	{
> >>
> >> ! 	  SCROLLINFO si;
> >>
> >>
> >>
> >>
> >> This was with my patched version, but I do not think I have any patches
> >> that comes in here:
> >>
> >> In GNU Emacs 23.0.60.1 (i386-mingw-nt5.1.2600)
> >>  of 2008-08-28 (patched)
> >> Windowing system distributor `Microsoft Corp.', version 5.1.2600
> >> configured using `configure --with-gcc (3.4) --cflags -Ic:/g/include'
> >>
> >>
> > 
>
Acknowledgement sent to kifer@HIDDEN:
New bug report received and forwarded. Copy sent to Emacs Bugs <bug-gnu-emacs@HIDDEN>. Full text available.
Report forwarded to bug-submit-list@HIDDEN, Emacs Bugs <bug-gnu-emacs@HIDDEN>:
bug#844; Package emacs. Full text available.
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Copyright (C) 1999 Darren O. Benham, 1997 nCipher Corporation Ltd, 1994-97 Ian Jackson.