Bug in Optimizer at CompareBlock?

Hi,

In my program, I use CompareBlock. It works normally until I run the Optimizer. With the optimized code, it always gives a False result.
I've checked the generated asm files and find that with the optimizer, only the first variable's addres is set, so it will always compare with a rendom memory area.
I atttached a very simple test program and the 2 asm outputs.
I use compiler ver. 6.00.00, optimizer ver. 3.6.12.0

Do I something wrong or it isreally a bug?

And a smaller error in PED32new: If I open the About dialog a second time, then it doesn't write the compiler version and the dialog couldn't be closed, so it hangs the whole program.

PEDnew is very beta with many bugs. For that reason I reverted to the original PED as the default IDE in the latest release.

Hi Merlin,

Thanks for your answer!
I've tried with the newest version (Compiler V6.00.05, Optimizer V3.6.13.2), the result is the same.
I've attached all the project files.

Best regards,

Sandor Wortmann

Hallo Sandor.

I have examined your code and cannot see an error there.

I am not disputing that the error exists but is seems that in creating a 'small example displaying the error' you have removed the error. This can often happen with the optimiser.

Rolf always insisted on a small demo program, but I do not. If you can send me your original project where you noticed the error via pm, I will examine that. You may depend on it that I will maintain confidentiality of the code.

Please note, in case you ran this in the simulator, that the optimiser is aware that the variable b is not used and so will remove all updates to it. So the value of b will not change in the simulator.

Regards