[pilot-db-list] a bug in recordview up/down arrows

[Yedidyah Bar-D. <di...@ta...>]

> > 7. There is a bug, that sometimes, when pressing the down-arrow or up-arrow
> > icons on the buttom-right, in the "record view" (is this the name?), it
> > crashes, requiring a soft reset. Pressing PgDn does work, so that's what
> > he does for now. I tried for some time to debug this with pose and gdb,
> > but did not really get anywhere. It says:
> > "DB (1.1.0) called SysFatalAlert with the message:
> > "leakdetect.c, Line:188, addr"."
> > and gives control to gdb, but I can't see too much - 'where' says
> > (gdb) where
> > #0  0x1001d8b2 in ErrDisplayFileLineMsg ()
> > #1  0x00091b88 in ?? ()
> > #2  0x0008955c in ?? ()
> > #3  0x0007b770 in ?? ()
> > #4  0x10066b08 in PrvSendEventToForm ()
> > #5  0x10069f2c in FrmDispatchEvent ()
> > #6  0x0006f670 in EventLoop () at main.c:201
> > #7  0x0006f8a6 in EditViewGetFieldHeight () at main.c:715
> > #8  0x0006f3e4 in CheckMinVersion () at crt0.c:69
> > which does not help much. I tried to also put a breakpoint in
> > leakdetect.c:188, but also didn't get much further. 
> 
> I fixed something similar in the CVS version (Danger! Don't go
> there!). 

Already done :-) but only on pose, it's not dangerous (except maybe
for my mental health?).

> If possible, it would be great to see if you can reproduce
> this bug with a stock binary release.  There are a number of

If you refer to db-1.2.0-alpha5.prc then it's mostly the same. It
crashes at the same point, but with a different message:

"DB (1.2.0m) called SysFatalAlert with the message:
"MemoryMgr.c, Line:4372, Non-word-aligned handle"."

> configuration oddities that might cause this (some codepaths seem not
> to have been used in years) and it that's causing this.
> 
> Submitting this as a bug would be good for record keeping:
>   http://sourceforge.net/tracker/?group_id=621&atid=100621

OK.

> 
> > How do I debug pilot-db? Is there some tutorial somewhere?
> 
> No, there is not much published information, but I'm eager and willing
> to help you figure it out, and if we do it on-list it will probably
> help people in the future.   
> 
> It looks like the problem you are hitting now is that pilot-db is a
> multi-segment application, and that the standard prc-tools kit
> (including m68k-palmos-gdb) does not really support multiple code
> segments.  But there are patches available to do so:
>   http://www.v-overbeek.nl/msectgdb/
> While it's possible to do the compile from scratch, it's a lengthy
> multi-step procedure.  I submitted Linux binaries to Ton, which should
> be now available on his site.  

I'll look there.
-- 
Didi