Hmmm, I've seen regvar problems before.  Can you provide the assembly dumps of that file under -O2 and -O2 -OoNOREGVAR respectively? It might reveal something.

Gareth aka. Kit

On 20/05/2021 09:07, NetSpirit via fpc-devel wrote:
Answer for my previous message
(https://lists.freepascal.org/pipermail/fpc-devel/2021-January/043512.html).

Memory leak happens when unit 'rtl\win32\sysinitpas.pp' compiled with
"-O2" or higher.
To eliminate this bug add "-O-" or "-OoNOREGVAR" to command-line when
compile this unit. This disables optimizations when enabled in 'fpc.cfg',
e.g:

%FPC_COMMAND% -O- -Mobjfpc win32\sysinitpas.pp

or

%FPC_COMMAND% -OoNOREGVAR -Mobjfpc win32\sysinitpas.pp




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