Re: [fpc-pascal] Windows unit and SyncObjs unit clash
On Wed, March 26, 2008 14:43, Marco van de Voort wrote: On Wed, 26 Mar 2008, Graeme Geldenhuys wrote: On 26/03/2008, Michael Van Canneyt [EMAIL PROTECTED] wrote: Yes, use fully qualified names. windows.tcriticalsection. syncobjs.tcriticalsection. Why doesn't Delphi compiler complain about it? A quick search revealed that Delphi's Windows.pas unit doesn't contain a TCriticalSection type definition, so why does FPC's Windows.pas unit? Why must FPC have two TCriticalSection type definitions? It was translated automatically with the h2pas tool, probably with the -t option, which prepends a T to all types. For backwards compatibility we cannot revert this. Hmm, didn't older (6) versions simply have this, and did synobjs get introduced later? In that case, if Delphi can break compat, so can we. Maybe we could mark the declaration in unit Windows deprecated and later remove in 2.5.x (or whatever that becomes)? Tomas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Windows unit and SyncObjs unit clash
On 27/03/2008, Tomas Hajny [EMAIL PROTECTED] wrote: Maybe we could mark the declaration in unit Windows deprecated and later remove in 2.5.x (or whatever that becomes)? I think this would be a good idea. It makes no sense having two TCriticalSection definitions. Plus it's much harder to maintain code shared between the Delphi and FPC compiler. Regards, - Graeme - ___ fpGUI - a cross-platform Free Pascal GUI toolkit http://opensoft.homeip.net/fpgui/ ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Windows unit and SyncObjs unit clash
On 27/03/2008, Marco van de Voort [EMAIL PROTECTED] wrote: Yes and no, that would be the last resort solution yes, but I think here direct Delphi compat _and_ platform independence should weigh heavier than a misplaced backwards compability for which we have no indications. So my final opinion would be: change it in 2.2.2 in 1st half 2008, not in 2.6 in first half 2011 or so. That would be much preferred by me as well, but I don't carry any weight in pushing such FPC decisions. Regards, - Graeme - ___ fpGUI - a cross-platform Free Pascal GUI toolkit http://opensoft.homeip.net/fpgui/ ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] Windows unit and SyncObjs unit clash
Hi, I've noticed this ages ago and found a work-around, but never reported it. I hit the same error again today and thought this time I would mention it. In tiOPF we have some IFDEF's for the 'Windows' unit. Some units also use the 'SyncObjs' unit for critical section handling. If 'SyncObjs' unit appears before the 'Windows' unit, our code fails to compile with a error referring to the TCriticalSection class. Does anybody know about this? Is there any permanent fix to that FPC doesn't depend on specific order in uses clause? I'm now using FPC 2.2.0, but this issue has been around since 2.0.2. [ copy ]-- C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3491,13) Error: Unknown record field identifier ENTER C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3491,18) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3497,15) Error: Unknown record field identifier LEAVE C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3497,20) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3503,13) Error: Unknown record field identifier ENTER C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3503,18) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3509,15) Error: Unknown record field identifier LEAVE C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3509,20) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3526,32) Error: Unknown record field identifier CREATE C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3532,13) Error: Unknown record field identifier FREE C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3532,17) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3544,13) Error: Unknown record field identifier ENTER C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3544,18) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3548,15) Error: Unknown record field identifier LEAVE C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3548,20) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3560,13) Error: Unknown record field identifier ENTER C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3560,18) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3564,15) Error: Unknown record field identifier LEAVE C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3564,20) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3569) Fatal: There were 19 errors compiling module, stopping [ end ]--- And here is an example of where the cursor lands to show the error... function TtiMultiReadExclusiveWriteSynchronizer.LockForRead: boolean; begin FCritSect.Enter; // Cursor showing error try result:= CanLockForRead; if Result then Inc(FReadCount); finally FCritSect.Leave; end; end; Regards, - Graeme - ___ fpGUI - a cross-platform Free Pascal GUI toolkit http://opensoft.homeip.net/fpgui/ ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Windows unit and SyncObjs unit clash
On 26/03/2008, Michael Van Canneyt [EMAIL PROTECTED] wrote: Yes, use fully qualified names. windows.tcriticalsection. syncobjs.tcriticalsection. That should work For lower level stuff, you should use TRTLCriticalSection, never TCriticalSection. It has the advantage of being portable. I'm surprised you actually use the windows unit. That is Evil(tm). The code in question is the tiOPF project which is shared with Delphi FPC users. They (Delphi users) are all out of luck with the cross-platform abilities of FPC, so we have to use what both compilers support. For Delphi, that would be the 'Windows' unit. Regards, - Graeme - ___ fpGUI - a cross-platform Free Pascal GUI toolkit http://opensoft.homeip.net/fpgui/ ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Windows unit and SyncObjs unit clash
On Wed, 26 Mar 2008, Graeme Geldenhuys wrote: Hi, I've noticed this ages ago and found a work-around, but never reported it. I hit the same error again today and thought this time I would mention it. In tiOPF we have some IFDEF's for the 'Windows' unit. Some units also use the 'SyncObjs' unit for critical section handling. If 'SyncObjs' unit appears before the 'Windows' unit, our code fails to compile with a error referring to the TCriticalSection class. Does anybody know about this? Is there any permanent fix to that FPC doesn't depend on specific order in uses clause? Yes, use fully qualified names. windows.tcriticalsection. syncobjs.tcriticalsection. For lower level stuff, you should use TRTLCriticalSection, never TCriticalSection. It has the advantage of being portable. I'm surprised you actually use the windows unit. That is Evil(tm). Michael. I'm now using FPC 2.2.0, but this issue has been around since 2.0.2. [ copy ]-- C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3491,13) Error: Unknown record field identifier ENTER C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3491,18) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3497,15) Error: Unknown record field identifier LEAVE C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3497,20) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3503,13) Error: Unknown record field identifier ENTER C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3503,18) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3509,15) Error: Unknown record field identifier LEAVE C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3509,20) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3526,32) Error: Unknown record field identifier CREATE C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3532,13) Error: Unknown record field identifier FREE C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3532,17) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3544,13) Error: Unknown record field identifier ENTER C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3544,18) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3548,15) Error: Unknown record field identifier LEAVE C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3548,20) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3560,13) Error: Unknown record field identifier ENTER C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3560,18) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3564,15) Error: Unknown record field identifier LEAVE C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3564,20) Error: Illegal expression C:\Programming\tiOPF2\Source\Core\tiUtils.pas(3569) Fatal: There were 19 errors compiling module, stopping [ end ]--- And here is an example of where the cursor lands to show the error... function TtiMultiReadExclusiveWriteSynchronizer.LockForRead: boolean; begin FCritSect.Enter; // Cursor showing error try result:= CanLockForRead; if Result then Inc(FReadCount); finally FCritSect.Leave; end; end; Regards, - Graeme - ___ fpGUI - a cross-platform Free Pascal GUI toolkit http://opensoft.homeip.net/fpgui/ ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Windows unit and SyncObjs unit clash
On 26/03/2008, Michael Van Canneyt [EMAIL PROTECTED] wrote: Yes, use fully qualified names. windows.tcriticalsection. syncobjs.tcriticalsection. Why doesn't Delphi compiler complain about it? A quick search revealed that Delphi's Windows.pas unit doesn't contain a TCriticalSection type definition, so why does FPC's Windows.pas unit? Why must FPC have two TCriticalSection type definitions? Regards, - Graeme - ___ fpGUI - a cross-platform Free Pascal GUI toolkit http://opensoft.homeip.net/fpgui/ ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Windows unit and SyncObjs unit clash
On Wed, 26 Mar 2008, Graeme Geldenhuys wrote: On 26/03/2008, Michael Van Canneyt [EMAIL PROTECTED] wrote: Yes, use fully qualified names. windows.tcriticalsection. syncobjs.tcriticalsection. Why doesn't Delphi compiler complain about it? A quick search revealed that Delphi's Windows.pas unit doesn't contain a TCriticalSection type definition, so why does FPC's Windows.pas unit? Why must FPC have two TCriticalSection type definitions? It was translated automatically with the h2pas tool, probably with the -t option, which prepends a T to all types. For backwards compatibility we cannot revert this. Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Windows unit and SyncObjs unit clash
On 26/03/2008, Marco van de Voort [EMAIL PROTECTED] wrote: Hmm, didn't older (6) versions simply have this, and did synobjs get introduced later? In that case, if Delphi can break compat, so can we. I think I still have my copy of Delphi 5 lying around. If I can find it, I'll see if TCriticalSection is in that Windows unit and if SyncObjs unit existed in v5. Regards, - Graeme - ___ fpGUI - a cross-platform Free Pascal GUI toolkit http://opensoft.homeip.net/fpgui/ ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Windows unit and SyncObjs unit clash
On Wednesday 26 March 2008 08:51:53 Graeme Geldenhuys wrote: On 26/03/2008, Marco van de Voort [EMAIL PROTECTED] wrote: Hmm, didn't older (6) versions simply have this, and did synobjs get introduced later? In that case, if Delphi can break compat, so can we. I think I still have my copy of Delphi 5 lying around. If I can find it, I'll see if TCriticalSection is in that Windows unit and if SyncObjs unit existed in v5. Hi, Graeme. I've got D5 installed under Wine here, and the only thing found when grepping for tcriticalsection in the ./Source/Rtl/Win directory is the function SetCriticalSectionSpinCount. The SyncObjs unit does exist in D5. ~/.wine/drive_c/Program Files/Borland/Delphi5 $ find . -iname 'syncobj*' ./Lib/Debug/syncobjs.dcu ./Lib/syncobjs.dcu ./Source/Vcl/syncobjs.pas Best regards, Pete C. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Windows unit and SyncObjs unit clash
Marco van de Voort wrote: On Wed, 26 Mar 2008, Graeme Geldenhuys wrote: On 26/03/2008, Michael Van Canneyt [EMAIL PROTECTED] wrote: Yes, use fully qualified names. windows.tcriticalsection. syncobjs.tcriticalsection. Why doesn't Delphi compiler complain about it? A quick search revealed that Delphi's Windows.pas unit doesn't contain a TCriticalSection type definition, so why does FPC's Windows.pas unit? Why must FPC have two TCriticalSection type definitions? It was translated automatically with the h2pas tool, probably with the -t option, which prepends a T to all types. For backwards compatibility we cannot revert this. Hmm, didn't older (6) versions simply have this, and did synobjs get introduced later? In that case, if Delphi can break compat, so can we. D5 has Windows.TRTLCriticalSection, and SyncObjs.TCriticalSection which encapsulates a TRLTCriticalSection. -- Joao Morais ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Windows unit and SyncObjs unit clash
Graeme Geldenhuys wrote: For lower level stuff, you should use TRTLCriticalSection, never TCriticalSection. It has the advantage of being portable. I'm surprised you actually use the windows unit. That is Evil(tm). The code in question is the tiOPF project which is shared with Delphi FPC users. They (Delphi users) are all out of luck with the cross-platform abilities of FPC, so we have to use what both compilers support. For Delphi, that would be the 'Windows' unit. What about use uses Windows under ifndef fpc? -- Joao Morais ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Windows unit and SyncObjs unit clash
On 26/03/2008, Joao Morais [EMAIL PROTECTED] wrote: What about use uses Windows under ifndef fpc? That will work for some units, but not all of them. Some units reference things in Windows unit not related to Critical Section, but I am definitely going to give this a try and see how far it takes me. Thanks for the suggestion. Regards, - Graeme - ___ fpGUI - a cross-platform Free Pascal GUI toolkit http://opensoft.homeip.net/fpgui/ ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
