Re: lynx-dev lynx 2.8.2 and 2.8.3pre6 - CRASH when working with textareas. (fwd)

[Klaus Weide]

This message never made it to lynx-dev, so I am resending it.

---------- Forwarded message ----------
Date: Wed, 26 Apr 2000 09:59:08 -0500 (CDT)
From: Klaus Weide <address@hidden>
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To: address@hidden
cc: address@hidden
Subject: Re: lynx-dev lynx 2.8.2 and 2.8.3pre6 - CRASH when working with 
textareas.
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On Wed, 26 Apr 2000, Bob Izenberg wrote:

> [ Forwarded message from unsubscribed address
>   address@hidden ]
> 
> Hello,
> 
> I am using Windows NT 4.0 and use Notepad as my external
> editor when using my
> Yahoo! Mail account.  I hit ^X-e while in the textarea to
> open it, and closing
> it fills in the text area.
>
> If what I have in Notepad is more than 43 lines, or WRAPS to
> more than 43
> lines, Lynx will bomb out with the following errors... 
> 
> ======================
> 43 lines
> --------
> 
> A Fatal error has occurred in Lynx Ver. 2.8.3pre.6
> 
> Please notify your system administrator to confirm a bug,
> and
> if confirmed, to notify the lynx-dev list.  Bug reports
> should
> have concise descriptions of the command and/or URL which
> causes
> the problem, the operating system name with version number,
> the
> TCPIP implementation, and any other relevant information.
> 
> Do NOT mail the core file if one was generated.
> 
> Lynx now exiting with signal:  11
> 
> signal code = SIGSEGV
> 
> Abnormal program termination
> 
> ======================
> 44+ lines
> ---------
> 
> Wrap lines to fit displayed area? (n)
> Assertion failed: line != NULL, file src/gridtext.c, line
> 1889
> 
> Abnormal program termination
> 
> ======================

Someone has reported something like this before (LWV?).  But nobody
has been able to provide a reproducible case, that could be used
to track the problem down.

Apparently, something in HText_ExtEditForm (GridText.c) or in one of
the functions it calls can corrupt the linked list of line structures.
But it isn't clear what.

It could have something to do with the logic I added for wrapping
long lines, but there is no indication for that in the messages you
show.  (In any case, this could be disabled by changing

    int         wanted_fieldlen_wrap = -1; /* not yet asked; 0 means don't. */

in the source of HText_ExtEditForm to 0.)

I would have to be able to reproduce the problem on linux, in order to
track down the problem.  I would need some HTML fragment, together with
instructions what to fill into the form, that creates the problem.
(No, I don't "do Yahoo", so something like "compose a new message in
Yahoo mail" wouldn't help.)

   Klaus