On Fri, 14 Jul 2017, ja...@productionautomation.net wrote:
What's the type of each variable?
Last_GS,G_End : longint;
Max_Program_to_Display : Word;
-----Original Message-----
From: fpc-pascal [mailto:fpc-pascal-boun...@lists.freepascal.org] On Behalf Of
Santiago A.
Sent: Friday, July 14, 2017 7:00 AM
To: fpc-pascal@lists.freepascal.org
Subject: Re: [fpc-pascal] Convert to int64 note
El 14/07/2017 a las 1:13, ja...@productionautomation.net escribió:
I've been trying to get my programs to compile without any warnings or notes,
but I keep getting this one:
promill.pas(2137,42) Hint: Converting the operands to "Int64" before doing the
subtract could prevent overflow errors.
I get it a lot, but this is the line the above example is from:
Last_GS:=G_End-(Max_Program_To_Display-1);
Can someone please explain that this hint means and how I would convert the operands to
"Int64" as recommended?
It means that if for example
G_End = -Maxint
then Last_GS can get a value that falls outside the valid integer range.
If you declare Last_GS as int64, you should not get the warning.
Michael.
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