Finding last line upon program end

[Robert E. Carneal]

Hello. I have a program I am trying to debug to see why it will
not completely finish. There are two END statements, but the
program is stopping somehwhere else.

It is an only 211 lines long, and I found the subroutine where
it stops, however there is no END statement there. Is there a
way to use debug to see the last (or next to last) line it is
in before stopping? I think from that point, I can work
backwards. This one is one frustrating little minx.

Or, if I can set the debugger to pause when a variable reaches
a certain value, that would probably help. If I could set it
somewhere to break when CityKount = 7147, and then step
line-by-line from that point and watch everything, it might help.

Reason I know it is not finishing is it is reading and examining
over 1.4 million lines of information. It is stopping after it
reads 7,148th line for some odd reason. No error message, so I'd
like to find the last line executed so I can see what variable
went haywire.

Thank you.

Robert

------------------


[This message has been edited by Robert E. Carneal (edited November 15, 2006).]

[Marco Pontello]

You may want to try this:
PBTracer

It's unfinished, ugly and not userfriendly. But it may help / do the job.
Just be sure to follow what's written in the readme.txt.

Bye!

------------------
Try Online TrID file identifier! Recognize over 2.300 filetypes and counting...
Give a powerfull scriptable Lua interface to your application with PowerBLua
Leakout - Firewall outbound control tester - BitmapRip Extract/recover bitmaps from any file!

[This message has been edited by Marco Pontello (edited November 16, 2006).]

[Arthur Gomide]

Check the stack - any recursive function?
Check for wrong chars on input file.
Do a memory/stack check before the line 7148.



------------------
Arthur Gomide
Como diria nosso profeta da bola, Dadá Maravilha:
"Para toda Problemática existe uma Solucionática!"

[Michael Mattias]

Is it ending, or is it aborting with runtime error? Big difference.

If ending, it's probably a problem with your flow logic, prehaps in your error-handling logic.

If aborting, it's probably a problem with your editing/error-checking.


>and I found the subroutine where
>it stops, however there is no END statement there

But does that subroutine ALWAYS flow to a RETURN statement?

[Michael Mattias]

>Or, if I can set the debugger to pause when a variable reaches
>a certain value

???

 IF Var = somevalue THEN
    Dummy =  1234   '<<< SET BREAKPOINT HERE and "RUN TO BREAKPOINT"
 END IF

MCM

[Don Schullian]

Bob,

Throw the code up and lets have a look. Also, what version of
PBdos are you using?


------------------
C'ya
Don
don at DASoftVSS dot com
http://www.DASoftVSS.com
--
The perfect American sentence:
"Like, absolutely awesome!"

[Robert E. Carneal]

You may want to try this: PBTracer I will.
Q: Check the stack - any recursive function?
A: Yes. It stops upon reading line 7148

Q: Check for wrong chars on input file.
A: Done. There are not any that I see, but I am inquiring to
the author if she put in characters that are not printable.

Q: Do a memory/stack check before the line 7148.
A: Done. I don’t recognize a problem.

Q: Is it ending, or is it aborting with runtime error? Big
difference.
A: It is Ending.
Q: If ending, it's probably a problem with your flow logic,
prehaps in your error-handling logic.
A: I agree.
Q: If aborting, it's probably a problem with your
editing/error-checking.
A: Not aborting, just stopping at that line

Q; But does that subroutine ALWAYS flow to a RETURN statement?
A: Yes. It *should* as it is just a top-down flow sub-routine.
I did try an IF statement where:
If CityKount = 7147, then
Lookhere=7 :’this had the breakpoint
End if

And it executed. But the line highlighted after execution was
the very first line at the top of the program which was
commented.

I am going to try the tracer and see what I get.

For those curious as to what I am doing, I have a list of places
in the United States. They look like this:
City, Zip, State, Country, FIPS,Pref, TZ, DST,Lat, Long, MSA, PMSA, and MA.
I am reading all that, and then looking to see if a traditional
abbreviation for the state exists. I.e., if St is MA, I look up
some abbreviations to see if a traditional abbrevation for
Massachusetts exists. Yes it does. So I print that record to a
file.

Then I return to the main part of the program. If it does not find a
traditional abbreviation, is returns to the main part of the program
without printing the record. So, yes, it is supposed to reach a
RETURN no matter if the result is yes or no.

After sleeping on it, I decided to copy the data, and erase
everything but the offending line/record, and just read that
one record and go line by line and see what it is doing. I
should have done that last night.

Robert


------------------

[Arthur Gomide]

Originally posted by Robert E. Carneal:
Q: Check the stack - any recursive function?
A: Yes. It stops upon reading line 7148

Put in the beginning of your program - 1st executable line:

PRINT FRE(-2) 'print the stack space (default is 1974 bytes)

and change the "breakpoint" to this, just to see the stack space:

IF CityKount = 7147 THEN
PRINT FRE(-2)
STOP
END IF

If the stack is low, put a $STACK before any executable line of your code:

$STACK 32 ' 32kb, maximum you can allocate.



------------------
Arthur Gomide
Como diria nosso profeta da bola, Dadá Maravilha:
"Para toda Problemática existe uma Solucionática!"

[Robert E. Carneal]

Everyone-

I am embarressed to admit it, but I use an editor to edit my
programs, and data with. Some records have "" (two double quotes)
for a variable. The developer of this data sometimes used '''',
(four single quotes), and the font I was using squeezed them
together making it look like two double quotes. After I spent
some time looking for '' (single quotes) and replacing that with
one double quote, it is running much better. Embarassing!!

Thank you everyone.

Robert

------------------


[This message has been edited by Robert E. Carneal (edited November 16, 2006).]