RE: Hard-Coded Scalar Value Substituted at Run Time

Ken Dibble Thu, 02 Mar 2017 10:58:31 -0800

At 12:47 PM 3/2/2017, you wrote:

Content-Transfer-Encoding: base64Hi Ken,
You may want to use SET COVERAGE at thebeginning and turn it off at the end of themethod that errors, and add that log, of itexists to your error logging. You'll see whatlines for called and which iteration it was on.
Sometimes, forgetting to LOCAL a variablechanges it in a function called later.


Yup. See my responses to others.

Thanks.

Tracy

On March 2, 2017 12:24:43 PM EST, "Fernando D.Bozzo" <[email protected]> wrote:

>Hi Ken,
>
>Seems a difficult one to trace, but just in case I give you some ideas
>based on personal experience with strange errors:
>

H[ÈÛÛXÝYÛH\ror rutine, put it in a try/catch that
>adds
>info to a var in a step by step basis, so you later can log it to a
>file.
>Must be bomb proof. I've once found an error there when iterating tge
>stack
>array, with some fields that normally are null but somerimes are not.
>In
>any case, an error there must not hide the real error.
>

ÈÝtrust UI controls to call or not a method, add validation in
>the
>methods called from UI so even if you call them from VFP command line,
>if a
>condition is noot meet, the method is not executed. Normally can be
>done an
>enabled_funtionallity() like method that can be used by the UI to
>enable/disable controls and the same method can be used on the business

Y]ÙÈÜHØ[YHÛØ[âFP worst situation, youcan generate log info in real time while

>the
\Ù\\ÈÛÜÚ[Ë[Ø]H][ÈHXHÚ]h info about controls used
>(important events like click), screens loaded/unloaded, some meaning
>variables and timer events may be, to have some context about executed
>order.
>Analyzing it later can give you some inside about how the user
>interacts
>with your app.
>
>Once, many years agi, a user notified a bug on which when loading the
main

ØÜY[[ÛÛXØÞ\ÈÚ\H[F&VBöbæ÷Bfnding thebug days later I did go with the user to watch

>him
Ú[H[\[È[H\[Ý[]H@ser while the app
>was
ØY[ÈY][\[\[er, enter,....., many times to bypass
BÙÈØÜY[ut all that enter keystrokes where present in the keyboard
Y\Ú]Ø]\ÙYHÛÛXØÞ\ÈÈÝÚÝÈZ\efault options.
>Solution was a clear typeahead before showing the UI :D
>
>
[ÌËÌMÈ
NNKÙ[XH <[email protected]> escribió:
FòföÆÆ÷rWg&öÐ yesterday evening, now that I'm back at work:
âFRcode in question is a FOR ... ENDFOR loop that iterates an array,
>with
>> the loop limiting value being the number of rows in the array, and
>there is
Ý[ÈÚ][hat loop that removes or adds rows or columns to the
\ay.
>Bw2§W7C £ãà£ãâdõ"ÒçÒDòÄTâD4dõ$ÒæðMail.aSortList,1)
>>       thekey = THISFORM.oMail.aSortList(m.x,10)  && "array dimensions
>[[Y£ ** More inoffensive code here.
SÔ\ÈIÝHÀaid, I can't reproduce this error myself but I've seen it
>\ÜYH^H\Ü[\ÚXÙH[ÛÈ^\ËÛÈHdon't know if
BFW&FöâfÆVBöâFRf'7B&÷rðr some later row of the array.
>2ÖVçFöæVBV&Æer, my initial assumption that the array was
>supposed
> to have 5 columns was incorrect, because I was looking at the wrong
>control.
>wfRæ÷rfW&fVBFBâFs case, when the problem code executes,
>this
>\^HØ@n only contain 10 columns:
>>
>> 1. It is a predefined property of the oMail object (based on the
Ý\ÝÛB6Æ70, and defined in a .prg file) and is DIMENSIONed as (1) at the
>outset.
>>
>> 2. It is then populated by a SELECT [10 specified fields] FROM
>[variable
XKØÝ\ÛÜH. INTO ARRAY expression with no WHERE clause.
>2âÀthough the name of the FROM table or cursor is variable, the
>ÜXÚYYYY[È\HÝ[H^\ÜÚ[ÛÙ\Ènot use AS clauses
>to
Ú[ÙHH[Y\ÈÙH\Ý[fields or supply default values for
>them.
>\YÜKif a specified field did not exist in the FROM table, an
>error
>ÛÝ[HÙ[\]Y]]Ú[ÈÝXÚ\Ü occurs.
>>
>> 4. It is not possible for the FROM table to contain no records when
BöffVæFær6öFRWV7WFW0, because in that case the code that generates
Be OM table would display a message for the user stating that the
>query
>ÙXÙYÈ\Ý[È[[ÙH[]@d controls on the form would
B\ØXY\ÈH\Ý[, the method containing the SELECT ... INTO
TVB^ression would not be called, the list control's array rowsource
>would
ÛÛZ[ÈXÛÜË[H\ÝÛÛÛ's sort method, where the
\ÜØØÝ\ËÛÝ[ÝHcalled.
â6òÒ6öæfFVçBFBFR'&6âöæÇave 10 columns (no more
>and no
\ÜÊH]HÚ[Ú@re the error is generated.
>>
>> Thus the only "possible" sources of an "array dimensions invalid"
>error,
Yhe error did indeed occur on the line indicated by the trace,
ÛÝ[N£¸Q¡M1
P¸¸¸%9Q<IIdáIÌsion somehow generated fewer
ÛÛ[[ÂâFâvW&R7V6`ied in its field list.
â"âFRW6W"v26öÖV÷r&ÆP to induce one of the disabled GUI
ÛÛÛÈÛÛYZÀw call the sort method when there was no data to sort.
>
>ËSS
H]\Y[[ÛÜXÝ\Ý[\ÈÈH[Xer of rows in
B'&GW&ærFRFW&FöâÆö÷à£à

>[ÙÜÙH[ÜÈÚÝ[H[\ÜÜÚXK£Q¡Ðhirdpossibility is that the trace provided by ASTACKINFO() is

>wrong.
[^H\XØ][ÛH\]Y[HÈÙYH@ry strange things with error
XÙ\ËÝXÚ\ÈÙ]\[evels of code that should be in the stack
>not
Z[Èeported. I have also seen, in the debugger, that errors don't
XÙ\ÜØ\[HÝ\XÙH[[YYX][H[H[HÙ code that generates
>them
>> may not be the line on which the debugger stops.
>FW&R6÷VÆBÇ6ò&R6öÖWFæp wrong with my assumptions regarding how
XYHace. In the case of the issue I've been talking about, the
XÙBÛÛZ[ÈHÛÝÚ[È[\Î][
H Program File: c:\cil data 2\genmaillst.sct  Module/Object:
>> genmaillst.listdisplay.resortlistbox  Source File: c:\cil data
>> 2\genmaillst.sct  Line Number: 86  Line Contents: thekey =
TÑÔKÓXZ[TÛÜ\Ý
L
B]el: 6  Program File: c:\stic foxpro framework\base
>> classes\sticbase.vct  Module/Object: genmaillst.listdisplay.error
>Source
>> File: c:\stic foxpro framework\base classes\sticbase.vct  Line
>Number: 23
>> Line Contents: DO FinalSTICError WITH 0, LINENO(1), theprogram,
>MESSAGE(1),
à ø$ÉÑ¡¥ÌÌè]¡¸Ñ¡±¥¹½½Ð0evel 5 was executed, the
>TÔ
HY]ÙÙHØXÝthat contains that code was triggered,
>as
>ÚÝÛ[@vel 6. Therefore, the error occurred in the stated line of

ÛÙBââÆWfVÂRâ £ãà£ãâöb6÷W'6RÂFRvFòæFÀe thisis to add code to test the size of

>the
\^Hefore trying to iterate it, which I have now done. But I am
>still at
>HÜÜÈÈ[\Ý[ÝÈH\ÜÛÝ[occur.

>Fæ·2à£ãà£ãâ¶Và£à((´´)M¹ÐÉ½´µä¹É¼iddevice with K-9 Mail. Please excuse my brevity.

[excessive quoting removed by server]

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RE: Hard-Coded Scalar Value Substituted at Run Time

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