From: sturm AT ost1 DOT ping DOT de (Oliver Sturm)
Subject: Re: ladybug fullscreen debugger
Date: Thu, 01 Jun 95 15:59:40 MEZ
To: djgpp AT sun DOT soe DOT clarkson DOT edu

>> >On Thu, 25 May 1995, Oliver Sturm wrote:
>[lots of quoted text snipped]
>> 
>> I'm loading HIMEM and EMM386. go32 reports having found VCPI memory.
>> Im using 4DOS version 5.5.
>> >
>
[ even more stuff cut ]
>
>> So, this is what I happens: 
>> 
>> c:\djgpp\twk>go32 -d ladybug twk
>> go32 version 1.12.maint3 Copyright (C) 1994 DJ Delorie
>> 73048+3072+1024 = 77144
>> 432 Kb conventional, 1776 Kb expanded - 2208 Kb total RAM available
>> Create Symbol file twk.sym
>> Segmentation violation in pointer 0x00000005 at d8:9001f989
>> eax=00000000 ebx=90022e54 ecx=00000006 edx=9005c000 esi=00000005 edi=90034b29
>> ebp=9fffff54 esp=9fffff4c cs=d8 ds=48 es=48 fs=48 gs=38 ss=48 cr2=00000005
>> Call frame traceback EIPs:
>>   0x9001f989
>>   0x9001e306
>>   0x9001ac77
>>   0x90000c0f
>
>According to this, the fault is in caused by these library functions:
>    0x9001f989  -- bcopy ()
>    0x9001e306  -- fwrite ()
>
>Please try this work around:
>
>go32 -d ladybug twk > x
>and then
>go32 -d ladybug twk
>
>  Let me know if that helps, also, if Ladybug crashes, run:

I didn't quite get what that should be good for, but it didn't make 
any difference. I got the same output in the file `x' and then again 
on the screen. When I left out the `2r1' in GO32, I got it all on the 
screen both times, nothing was in the file.
>
>simify /djgpp/bin/ladybug
>
>and mail me the result. Or you can use
>simify /djgpp/bin/ladybug -o ladybug.bug
>and mail the file ladybug.bug
>
symify says:

0x9001f898   _bcopy+33
0x9001e306   _fwrite+162
0x9001ac77   _syms_init+1483, line 885 of syms.c
0x90000c0f   _main+133, line 313 of ed.c

sorry about the trouble,

Oliver


--

   Oliver Sturm   sturm AT ost1 DOT ping DOT de