Bogus W1036 ?
Posted by jpluimers on 2020/07/30
Reminder to self for checking if this still fails:
[WayBack] Bogus W1036 ? Documentation: … “If you do not explicitly initialize a global variab… – Stefan Glienke – Google+
Documentation: http://docwiki.embarcadero.com/RADStudio/Tokyo/en/Variables_(Delphi)
“If you do not explicitly initialize a global variable, the compiler initializes it to 0.”
{$APPTYPE CONSOLE} var i: Integer; begin Writeln(i); end.Error:
[DCC Warning] Project1.dpr(6): W1036 Variable 'i' might not have been initialized
–jeroen
The Wiert Corner - irregular stream of stuff 
abouchez said
Yes. All global variables are allocated at once when the exe is loaded, as a whole private in-memory section, and filled by the Operating System executable loader with zeros.
This warning is indeed paranoid, and only affect the dpr (not the units).
In fact, this is a compiler optimization. This variable i is not identified as a global variable, but a local variable – typically it could be used in a loop.
Usually, I never put any loop and such in the main begin…end block of the dpr. I try to always use an explicit sub-function.
So this is not a bug, this is a feature, from the compiler point of view.
Stefan Glienke said
I cannot count how often I had weird issues with all kinds of things just because I thought that just quickly testing something in the dpr main was a good idea.