Re: [Firebird-devel] Firebird UDF compiled with Lazarus 2.0.0 and FPC 3.0.4

[Carlos H. Cantu]

Title: Re: [Firebird-devel] Firebird UDF compiled with Lazarus 2.0.0 and FPC 3.0.4

More than 15 years ago, I found that FPC didn't produce PIC code, and this made UDFs to crash the FB server.

When I was testing, it was really easy to reproduce the problem, specially with SuperServer: open two connections and run a SP that calls the UDF inside a big loop. You must do this in both connections at the same time. In my tests, it always crashed FB after a few seconds running.

I hope FPC has improved in this aspect and maybe now it can be safely used to create UDFs.

[]s
Carlos
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Thank you all guys, I finally managed to fix the issue: There was an initialization section in one unit imported that set IsMultiThread = True I removed the cthreads unit in the uses clause. Does anybody have any clue what are the implications of these changes? On Thu, Feb 27, 2020 at 1:41 PM liviuslivius <liviusliv...@poczta.onet.pl> wrote: Two things 1. What is calling convention should be cdecl. 2. How do you alloc memory for string? Regards, Karol Bieniaszewski Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel

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