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- TBXFIX
- Turbo Toolbox Bug Fixes, Version B
-
- By Larry Kraft and Bela Lubkin
- Updated by Randy Forgaard
- March 24, 1985
-
-
- If you discover any errors or omissions in this file, or if future
- versions of Turbo Toolbox incorporate changes not mentioned here,
- please send mail to Randy Forgaard [70307,521], or feel free to make
- the changes yourself and upload the new version of this file.
-
- This file describes all known changes and bug fixes to Borland's Turbo
- Toolbox since it was originally introduced. The Toolbox is provided
- in source code form (except for GINST), so you can make these changes
- directly to the source code to update your copy of the Toolbox. It
- has been discovered that the serial numbers on the Toolbox copies are
- not completely reliable indicators of whether these bug fixes have
- already been incorporated. Thus, to be safe, it would be best to take
- a few minutes to review these bug fixes and make any necessary changes
- to your copy of the Toolbox. Since these are all the known changes,
- and there aren't very many of them, it should not be necessary for you
- to return your copy of the Toolbox for an updated copy. You can
- perform the "upgrade" yourself.
-
- The Toolbox has been variously released as Version 1.00, Version 1.01,
- and Version 3.00. Generally, the changes described below will
- "upgrade" Version 1.00 to Version 1.01. (But, again, look this file
- over even if you have Version 1.01.) If you have Version 3.00 of the
- Toolbox, the changes to ACCESS.BOX (or ACCESS3.BOX) have already been
- incorporated (along with many other changes related to Turbo 3.0), but
- you should look at the changes below that pertain to other files in
- the Toolbox.
-
-
- A. GENERAL CHANGES
-
- 1. If you make the changes below, and you currently have Version
- 1.01 of the Toolbox, change the headers of ACCESS.BOX, GETKEY.BOX,
- ADDKEY.BOX, and DELKEY.BOX to say "TURBO-access version 1.01" and
- "Copyright (C) 1984, 85."
-
-
- B. CHANGES TO ACCESS.BOX
-
- 1. Add the following two lines in two different places --
- immediately after the "Assign(...)" in procedure MakeFile; and also
- immediately after the "Assign(...)" in procedure OpenFile:
-
- IOstatus:=IOresult;
- TaIOcheck(DatF, 0);
-
- 2. Add the following line immediately after "PutRec(...)" in
- procedure CloseIndex:
-
- Updated := false;
-
- (Without the above change, an index file can become corrupted if you
- close an index file and then open another one in the middle of your
- program.)
-
-
- C. CHANGES TO ADDKEY.BOX
-
- 1. In the very last three lines of the file, change:
-
- end;
- end;
- end;
- to:
- end;
- PP := 0;
- end;
- end;
-
-
- D. CHANGES TO DELKEY.BOX
-
- 1. In the very last four lines of the file, change:
-
- end;
- end;
- end;
- end;
- to:
- end;
- end;
- PP := 0;
- end;
- end;
-
-
- E. CHANGES TO SORT.BOX
-
- 1. About 17 lines after the main BEGIN of procedure QuickSort,
- change:
- M:=(I+J) Div 2;
- to:
- M:=(I+J) Shr 1;
-
- (Note: This is not just for efficiency. The old "Div 2" version can
- cause an arithmetic run-time error when sorting large files.)
-
-
- F. CHANGES TO SORT1.PAS AND SORT2.PAS
-
- The TurboSort function should not be used as a parameter to a WRITE or
- WRITELN statement, as this may result in an illegal recursive call to
- READ or WRITE. Make the following changes to the sample programs
- SORT1.PAS and SORT2.PAS on the Toolbox disk. You might also want to
- pencil in these changes in Sections 9 and 10 of the Toolbox manual
- (the page numbers are indicated below).
-
- 1. Add the following variable declaration to the VAR section of
- both main programs (pages 71, 75, 78, and 82 of the Toolbox manual).
-
- x : integer;
-
- 2. Throughout SORT1.PAS and SORT2.Pas, replace each occurrence
- of the following line:
-
- WriteLn(TurboSort(SizeOf(CustRec)));
-
- with the following TWO lines:
-
- x:=TurboSort(SizeOf(CustRec));
- WriteLn(x);
-
- If this bug has not been fixed in your copy of the Toolbox, there will
- be one occurrence of this in SORT1.PAS, and two occurrences in
- SORT2.PAS. See also pages 74, 76, 78 (two occurrences), and 84 (two
- occurrences) of the Toolbox manual.