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Title: Delphi 11.2 OpenSCManager exception Post by: thomh on December 16, 2022, 01:56:09 PM Hi,
In Delphi 11.2 Patch 1 compiling in 64bit debug mode, I get an exception in the rtcService unit in method IsServiceStarting on line 44: SvcMgr := OpenSCManager(nil, nil, SC_MANAGER_CONNECT) and on line 56: CloseServiceHandle(SvcMgr); This is running on a Win11 VM with the latest updates. Can you duplicate this? Delphi 11.1 works. // Thom Title: Re: Delphi 11.2 OpenSCManager exception Post by: D.Tkalcec (RTC) on December 16, 2022, 02:10:51 PM OpenSCManager and CloseServiceHandle are both Delphi RTL functions, mapping directly to the Windows API.
I am still on Delphi 11.0 and Windows 10 with no plans to upgrade. From what I've just read now, Delphi 11.2 has introduced big changes, which might break quite a few things. Best Regards, Danijel Tkalcec Title: Re: Delphi 11.2 OpenSCManager exception Post by: thomh on December 16, 2022, 03:25:44 PM Thanks, Danijel.
So back to Delphi 11.1 until EMB fixes this. // Thom Title: Re: Delphi 11.2 OpenSCManager exception Post by: D.Tkalcec (RTC) on December 16, 2022, 11:23:45 PM Oh, wait. I've just noticed that OpenSCManager and OpenService functions return a THandle (32-bit on 32-bit platforms, 64-bit on 64-bit platforms), but Svc and SvcMgr variables (which store their return values) are declared as Integer (always 32-bit) in the IsServiceStarting function.
This is a bug. Svc and SvcMgs variables should be declared as THandle ... function IsServiceStarting(const ServiceName:String): Boolean; var Svc: THandle; // changed from Integer SvcMgr: THandle; // changed from Integer ServSt: TServiceStatus; I've committed this fix to GitHub. Best Regards, Danijel Tkalcec Title: Re: Delphi 11.2 OpenSCManager exception Post by: D.Tkalcec (RTC) on December 17, 2022, 10:53:20 AM By the way ...
I did install Delphi 11.2 yesterday and found that all the exceptions caused by the new Linker in Delphi 11.2 can be avoided, if you open Project Options / Building / Delphi Compiler / Linking and remove check-boxes from "Support address space layout randomization (ASRL)" and from "Support high-entropy 64-bit address space layout randomization (ASLR)". These settings are per Project and per Target. Even though I find these new linker options useful for debugging, I would still recommend anyone who has a Project that needs to run in a Production environment to DISABLE these two Linker options for their RELEASE / DEPLOYMENT builds. Best Regards, Danijel Tkalcec |