FPC 3.2.2: Is TFPGInterfacedObjectList working correctly?
lazarus / 64-FPC development

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antispam88 · 2022-07-19 04:12

Hi,

we want to upgrade our application working with fpc 3.0.4/lazarus
2.0.8 to the latest version 3.2.2/2.2.2.
In our app we are using interfaces (IUnknown) managed by
TFPGList/TFPGMap. It worked as expected and we never had any problems
regarding memory leaks.

But with fpc 3.2.2 our application is crashing regarding the TFPGMap.
In the topic
https://forum.lazarus.freepascal.org/index.php/topic,54089.0.html I
have already got the hint to use TFPGMapInterfacedObjectData. But
exchanging TFPGMapwith TFPGMapInterfacedObjectDatacauses an access
violation.

I have created a test app with TFPInterfacedObjectList which throws
also the access violation (fgl.pp 1197;
TFPGInterfacedObjectList.Deref). Furthermore I have tested the code
also with 3.0.4/2.0.8 getting the same access violation.

Is our use case not supported or is this an error in
TFPGInterfacedObjectList/TFPGMapInterfacedObjectData?
Has anyone a solution for our problem?


Best regards
antispam88

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antispam88 · 2022-07-26 09:58

No comment at all?

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PascalDragon · 2022-07-26 19:20

Quote from: antispam88 on July 19, 2022, 06:12:10 amI have created a
test app with TFPInterfacedObjectList which throws also the access
violation (fgl.pp 1197; TFPGInterfacedObjectList.Deref). Furthermore I
have tested the code also with 3.0.4/2.0.8 getting the same access
violation.

Is our use case not supported or is this an error in
TFPGInterfacedObjectList/TFPGMapInterfacedObjectData?
Please report a bug with an example that does not depend on the LCL.