Devart Forums

Hello,

Delphi 10 Seattle win32, VirtualDAC 10.0, Win 10 x64

When using VirtualDAC with FireDAC datasets I get memory leaks, sometimes AV at memory manager. Sometimes closing main form only hide appl, appl remains in memory.

Samle appl is sent to [email protected] with subject Sometimes closing main form only hide appl, appl remains in memory.

TIA and best regards
Branko

Hello,

We can't reproduce the problem. Please describe the steps to reproduce the situation. Also specify the memory manager you are using for detecting memory leaks.

Hello,

1) Samle appl was sent to [email protected]. Just click on "Open / close" button and close appl.
2) Default Delphi 10 MM

Specify the memory manager you are using for detecting memory leaks.

As I have already answered - memory leaks are detecting by default Delphi 10 memory manager. Memory leaks detecting is enabled with code I get the report below:

An unexpected memory leak has occurred. The unexpected small block leaks are:
1 - 12 bytes: TObject x 1
13 - 20 bytes: TFDExpressionManager x 1, UnicodeString x 143
21 - 28 bytes: UnicodeString x 144
29 - 36 bytes: EAccessViolation x 2, UnicodeString x 42
37 - 44 bytes: TFDExpressionFunctionDesc x 119, UnicodeString x 12
45 - 52 bytes: UnicodeString x 4
61 - 68 bytes: Unknown x 162
93 - 100 bytes: TFDStringList x 2
173 - 188 bytes: UnicodeString x 2
1645 - 1804 bytes: Unknown x 1

As I wrote you earlier, the issue is not reproduced when using either the standard memory manager or FastMM, or EurekaLog. We use Seattle with Update 1.

P.S. Judging by the log you provided, AV and MemoryLeak occur in FireDAC

AlexP wrote:We use Seattle with Update 1.

Me too.
Are you launch the demo appl I sent you?
I get memory leaks and AV also with Delhi XE7 and XE4!

The issue is not reproduced on your project in any of studios. Please provide also the dproj project file. The case may occur due to the project settings.

Sent to support*devart*com

Please send your dproj again to alexp*devar*com.

I found what causes memory leaks: Embarcadero\Studio\17.0\bin\SQLite3.dll

Check this behavior on the standard SQLite library: http://sqlite.org/download.html

Yes, with standard sqlite.dll no memory leaks. I just wanted inform you where / why memory leeks occours.

When developing and testing our products to work with SQLite we use only standard SQLite library available on the official project site : http://sqlite.org