Re: [fpc-devel] Free Pascal 2.6.0 released!
Felipe Monteiro de Carvalho wrote: On Sun, Jan 1, 2012 at 2:12 PM, Jeff Duntemannj...@duntemann.com wrote: Bravo! My only question is: Are there any particular issues with respect to using 2.6.0 with Lazarus? For desktop platforms I don't know any issues. It works just as good as 2.4 I just found one small issue: if you use Lazarus 0.9.30.2 to compile graphic applications, it will pass -WG option to FPC, on all platforms. However FPC 2.6.0 rejects this option (Error: Illegal parameter: -WG) on platforms where it's not sensible (like Linux). Bottom line: you can't graphic applications from Lazarus (including lazbuild) 0.9.30.2 using FPC 2.6.0 on Linux. This is of course fixed in Lazarus SVN by Mattias already :) See revisions 31125 and 31127 (http://svn.freepascal.org/cgi-bin/viewvc.cgi?view=revroot=lazarusrevision=31125 and http://svn.freepascal.org/cgi-bin/viewvc.cgi?view=revroot=lazarusrevision=31127 ). To workaround, you may need to backport these changes for Lazarus 0.9.30.2 (or just switch to Lazarus SVN, which was my solution :). Michalis ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Pointer cache for fast class/pointer access.
Something like this ;): type TDepth3 = class public mValue : integer; constructor Create; destructor Destroy; override; end; constructor TDepth3.Create; begin mValue := 666; end; destructor TDepth3.Destroy; begin end; type TDepth2 = class public mDepth3 : TDepth3; constructor Create; destructor Destroy; override; end; constructor TDepth2.Create; begin mDepth3 := TDepth3.Create; end; destructor TDepth2.Destroy; begin mDepth3.Free; end; type TDepth1 = class public mDepth2 : TDepth2; constructor Create; destructor Destroy; override; end; constructor TDepth1.Create; begin mDepth2 := TDepth2.Create; end; destructor TDepth1.Destroy; begin mDepth2.Free; end; procedure Demo1; var mDepth1 : TDepth1; vValue : integer; begin mDepth1 := TDepth1.Create; vValue := mDepth1.mDepth2.mDepth3.mValue; writeln( 'vValue: ', vValue ); mDepth1.Free; end; I consider .mDepth2.mDepth3 nested classes ;) Bye, Skybuck. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Pointer cache for fast class/pointer access.
On Fri, Dec 30, 2011 at 3:09 PM, Hans-Peter Diettrich drdiettri...@aol.com wrote: Skybuck Flying schrieb: 2. Nested/delegated classes incur a pointer access penalty, the deeper the nesting the higher the penalty. Why? Nested classes are not a problem in OPL, more in C++ (multiple inheritance!). Nested classes are a problem because of the pointer overhead. For example 100 nested classes will require 100 pointer lookups and thus 100 instructions. Please give example code of what you consider nested classes. So a good question would be: what capabilities do classes have which objects do not have ? Better question: what common capabilitiers are implemented differently in Object and TObject? Try to answer that question first, then we'll see what you didn't understand. IMHO, I think he talked about: TFoo = object [vs] TFoo = class Marcos Douglas ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Pointer cache for fast class/pointer access.
Skybuck Flying schrieb: vValue := mDepth1.mDepth2.mDepth3.mValue; You can implement such a funny hierarchy in any language. So what? DoDi ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re[2]: [fpc-devel] Misterious error
Hello FPC, Monday, January 2, 2012, 9:27:50 PM, you wrote: The solution to optimize the unnecessary finally blocks without breaking exit behavior is still to be found. SG More sophisticated patch applied in r19955. If you can test SG your project with it, that would be just SG great. I had updated to 19958 and it still fails with the same SIGSEGV. Again adding the try..finally..end in the function cures the problem. [Updating to 19959 to test as my code uses Variants...Done] No sorry, still the same SIGSEGV :( Do you know which kind of code I must look for to isolate the problem ? -- Best regards, José ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Misterious error
03.01.2012 23:54, José Mejuto пишет: Hello FPC, Monday, January 2, 2012, 9:27:50 PM, you wrote: The solution to optimize the unnecessary finally blocks without breaking exit behavior is still to be found. SG More sophisticated patch applied in r19955. If you can test SG your project with it, that would be just SG great. I had updated to 19958 and it still fails with the same SIGSEGV. Again adding the try..finally..end in the function cures the problem. [Updating to 19959 to test as my code uses Variants...Done] No sorry, still the same SIGSEGV :( Do you know which kind of code I must look for to isolate the problem ? I'd suggest looking at the constructors containing an 'exit' statement, but I'm not entirely sure. Does restoring removed line 287 of psub.pas remove the segfault? (The line was: include(current_procinfo.flags,pi_needs_implicit_finally); ) Regards, Sergei ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
