Re: [Dev-C++] help

[Jason H. <jas...@bt...>]

I couldn't tell you exactly what the problem is without the seeing the
source code, which I'm interested in doing anyway as it's not a problem I've
come across before. However I can suggest what may be the cause. By any
chance is the algorithm used a recursive one? That could be one reason you
are getting a 'stack fault' as every time you call a method you are creating
a new set of instance variables (amongst other things) on the stack for it,
and there is only a limited amount of space allocated to the stack usualy.
Notice that in both versions the stack pointer (ESP) is about 00560000h
which is about 5 Meg assuming it started a zero. I think on intel machines
that is the case?

There may be another cause but that seems the most likely. If you are using
a recursive function then try to reimplement it in a non-recursive manner,
it will be faster that way too.

If recursive calls are the cause, then this fault also suggests that there
may be an error in the termination condition of the function(s), so you are
going through an infinite number of recursive calls, although it may just be
that the algorithm requires so many calls that the termination condition
would never be met before a stack overflow.

This is all just a stab in the dark without seeing the code, but I hope it
helps.

Jason

----- Original Message -----
From: "Mohammed Riyaz" <p_m...@ho...>
To: <dev...@li...>
Sent: Wednesday, March 06, 2002 7:43 AM
Subject: [Dev-C++] help


>
> Hey guys,
>
> i wrote a program to solve the knight's problem.(move to every block on
the
> chess board using the knight's movements, but never reach the same block
> twice.)
>
> I feel though i coded the program right my system is unable to run the
> program.
>
> In order to test it i compiled the program with two compilers, as a result
> both the exe files gave errors. but the exe file created by dev-c++
compiler
> ran longer than the other(i.e it could try more to reach the result).
>
> the error message for both theexe files was
> " this program has performed an illegal operation and will be shut down"
>
> but the details causing the error were diffrent in the either case:
>
> When compiled with Dev-c++ compiler:
>
> KNIGHT caused a stack fault in module KERNEL32.DLL at 0167:bff7a2a1.
> Registers:
> EAX=0054fffc CS=0167 EIP=bff7a2a1 EFLGS=00000216
> EBX=78037780 SS=016f ESP=00552018 EBP=00552024
> ECX=c1413f00 DS=016f ESI=00000024 FS=4d3f
> EDX=bffc9490 ES=016f EDI=81661bc0 GS=0000
> Bytes at CS:EIP:
> 58 5f 8b e5 5d c3 a1 e8 9c fc bf 8b 08 ff 41 38
> Stack dump:
> 81660a14 00000002 c1413f00 00552044 bff75d40 00000002 00000024 78037780
> bffa0001 81660a14 00000000 00552480 78011eb2 0000000c 0055206c 00000002
>
>
>
> When compiled with borland v5.5 compiler:
>
> KNIGHT caused a stack fault in module KNI.EXE at 0167:0041557a.
> Registers:
> EAX=00000006 CS=0167 EIP=0041557a EFLGS=00010206
> EBX=00562018 SS=016f ESP=00562000 EBP=0056205c
> ECX=005624f1 DS=016f ESI=005624f1 FS=4d1f
> EDX=00000000 ES=016f EDI=0000000a GS=0000
> Bytes at CS:EIP:
> 55 53 56 57 8b 5c 24 14 8b 4c 24 18 0b c9 75 08
> Stack dump:
> 00415991 0000000a 00000000 00000024 005625e6 00562664 004159a4 0000000a
> 00000000 00000024 005625fe 00562664 00000001 00000020 0056260e 00562664
>
>
> cud some one tell me what i cud do?
> i didnt use dynamic memory allocation in my program.
> -riyaz
>
> ========================================================================
> P.Mohammed riyaz
> Student, Computer Science And Engineering
> ========================================================================
>
>
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