- Gpc - gnu.de

Fwd: findfiles syntax
by Luis Rivera 24 May '10

24 May '10

for the record, ---------- Forwarded message ---------- From: Luis Rivera <jlrn77(a)gmail.com> Date: 22 May 2010 11:53 Subject: Re: findfiles syntax To: leledumbo On 22 May 2010 03:00, leledumbo <leledumbo_cool(a)yahoo.co.id> wrote: > > From the reference: > type > TStringProc = procedure (const s: String); > > procedure FindFiles (const Directory, Mask: String; MainDirFirst: Boolean; > FileAction, DirAction: TStringProc); attribute (iocritical); > > How you call it: > findfiles(mydir,a,false,reset,nil); > > mydir is of type string => matches Directory type > a is of type text => doesn't match Mask type > false is of type boolean => matches MainDirFirst type > reset is a procedure to open file for reading, it's of type procedure (f: > text) for text files => doesn't match FileAction type TStringProc (see > above) > nil is a pointer pointing to address 0, which is a reserved location for > unallocated vars => doesn't match DirAction type TStringProc (see above) > > Can you see where the mistakes are now? I do. However, one thing that bothers me is that the sample code at findfilesdemo.pas mentioned earlier in this thread includes the line FindFiles (DirSelf, '*.{pas,p,pp,dpr}', False, DoOutput, nil); as an example. Now I wonder why it compiles and runs if nil shouldn't match. Thanks, -- Luis Rivera O< http://www.asciiribbon.org/ campaign -- Luis Rivera O< http://www.asciiribbon.org/ campaign

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Help! I crashed the compiler.
by John L. Ries 05 May '10

05 May '10

The attached example, produces the following highly informative error message when compiled: gpcbug20100502.p:13: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://www.gnu-pascal.de/todo.html> for instructions. I'm running GPC 20070904, based on gcc-4.1.2 under 64-bit Linux (Slamd64 12.2 to be exact). The error is also triggered on my 32-bit Linux (Debian 5.0.4) system running the same compiler, based on gcc-4.1.3. The code (attached) is as follows: unit example; interface type CandName(MaxCandName:integer) = string(MaxCandName); CandStatus = (Elected, Eliminated, Neither); CandRecord = record Name : CandName; RawVote : integer; Allocation : integer; Status : CandStatus; end; CandArray(N:integer) = array[1..N] of CandRecord; end. If I change the declaration on the array to "^CandRecord", the example compiles normally. The types also compile normally inside of a program (instead of a unit). If there's a more recent version of the GPC codebase that I should be using instead, then please let me know. --------------------------| John L. Ries | Salford Systems | Phone: (619)543-8880 x107 | or (435)867-8885 | --------------------------|

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GPC debugging with Snow Leopard/Xcode 3.2
by Francesco Panasiti 29 Apr '10

29 Apr '10

I've moved a large GPC project from Mac OSX 10.4 to Snow Leopard (Xcode 3.2, Intel CPU). Compilation (GNU Pascal 3.4.6u4) is ok, but I can't start debugging from Xcode as I get the following error: ""Exception starting task (/Developer/usr/bin/gdb) ; name: NSInvalidArgumentException, reason: working directory doesn't exist"" With evidence, gdb is looking for the executable in the wrong directory, but I don't know how to workaround that. Thanks in advance for any help. ------------------------------------------------------------- Francesco Panasiti -------------------------------------------------------------

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Fwd: [Fwd: GCC 4.5.0 Released]
by Rugxulo 21 Apr '10

21 Apr '10

Oops, replied to private e-mail instead! ---------- Forwarded message ---------- From: Rugxulo <rugxulo(a)gmail.com> Date: Tue, 20 Apr 2010 19:13:05 -0500 Subject: Re: [Fwd: GCC 4.5.0 Released] To: Adriaan van Os <gpc(a)microbizz.nl> Hi, just a few warnings from me. ;-) On 4/19/10, Adriaan van Os <gpc(a)microbizz.nl> wrote: > > The Free Software Foundation and the GNU Compiler Collection (GCC) > development team have released GCC 4.5.0. Clang is also self-hosting now, and ClangBSD can bootstrap (currently in testing but seems to basically work, from what I hear). > The developers have measured performance improvements of 5% to 10% > on high-performance computing benchmarks. (Of course, results vary > depending on choice of CPU, benchmark, and optimization options.) In my (horribly lame) experience, I saw some bad regressions with 4.4.2 vs. earlier GCCs. Granted, it was just one really weird case, but still, it makes me think even moreso that GCC is only 686-tuned these days. (I was trying to benchmark something on my old old 586.) It worries me a bit since I just assumed 4.x was always way better. (Note that I never bothered to isolate the problem just yet, it wasn't crucial or anything, just really odd. And it was a C program, not Pascal.) > GCC 4.5.0 is now capable of "link-time optimization". Only using an ELF container (although non-ELF targets can somehow possibly use it too, allegedly). Hopefully not as exclusive as Gold linker (x86/x86-64 ELF only). I do really feel like all the world's a Linux these days. :-/ > GCC also generates better debug information for optimized code, > including information about the value of variables that have been optimized > away. In other words, you need GDB 7+ by default (else have to choose an older Dwarf debug format via --dwarf-2 or whatever).

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[Fwd: GCC 4.5.0 Released]
by Adriaan van Os 19 Apr '10

19 Apr '10

-------- Original Message -------- Subject: GCC 4.5.0 Released Date: Sun, 18 Apr 2010 16:01:49 -0700 (PDT) From: mitchell(a)codesourcery.com (Mark Mitchell) Reply-To: mark(a)codesourcery.com To: gcc-announce(a)gcc.gnu.org CC: gcc(a)gcc.gnu.org The Free Software Foundation and the GNU Compiler Collection (GCC) development team have released GCC 4.5.0. This release is a major upgrade to the compilers, with a particular focus on the performance of the generated code. The developers have measured performance improvements of 5% to 10% on high-performance computing benchmarks. (Of course, results vary depending on choice of CPU, benchmark, and optimization options.) GCC 4.5.0 is now capable of "link-time optimization". Traditionally, most C and C++ compilers (including GCC) have only been able to optimize within a single source file or "module". GCC was therefore unable to take advantage of optimization opportunities that required knowledge about multiple modules. This limitation has been removed in GCC 4.5.0. This optimization can provide significant increases in performance and equally significant reductions in code size. In addition, GCC 4.5.0 has improved loop optimization infrastructure. This infrastructure, based on an advanced "polyhedral" model for optimization, allows GCC to perform more advanced loop optimizations. In the future, this infrastructure will be tuned and used more heavily. GCC 4.5.0 also features improvements for a wide variety of specific architectures, including support for recent CPUs using the ARM, AVR, ColdFire, MIPS, Power, SuperH, and x86 architectures. GCC also generates better debug information for optimized code, including information about the value of variables that have been optimized away. And, of course, a wide variety of defects in all parts of the compiler (ranging from language conformance to code-generation) have been corrected. Refer to gcc.gnu.org: http://gcc.gnu.org/gcc-4.5/changes.html for more information about this release. GCC 4.5.1, with corrections for any critical defects reported in GCC 4.5.0, is expected in July, 2010. As always, a vast number of people contributed to this GCC release -- far too many to thank individually! -- Mark Mitchell CodeSourcery mark(a)codesourcery.com (650) 331-3385 x713

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Disposing generic pointers
by John L. Ries 15 Apr '10

15 Apr '10

The other day, I compiled a unit I wrote several years ago under FPC and got the following warning: queues.p(101,37) Warning: use of NEW or DISPOSE for untyped pointers is meaningless The same unit compiles under GPC (20070904) without warnings. My question is: does GPC properly deallocate memory in such a case, or is the DISPOSE request ignored? The offending procedure is: procedure killq(var Queue : QType ); var Item : pointer; begin while(not EmptyQ(Queue)) do begin Dequeue(Queue,Item); if Item<>nil then dispose(Item); end; end; { killq } --------------------------| John L. Ries | Salford Systems | Phone: (619)543-8880 x107 | or (435)867-8885 | --------------------------|

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GPC installation
by kriti panday 19 Mar '10

19 Mar '10

Hello Please tell me how can we install GPC on unix or windows. Or the installtion steps for GPC on windows. the installtion steps for GPC on unix. Thanx

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Moving doubles with overlapped memory
by Adriaan van Os 10 Mar '10

10 Mar '10

Any comments on <http://bugs.freepascal.org/view.php?id=15921> ? Regards, Adriaan van Os

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GPC installation
by kriti panday 06 Mar '10

06 Mar '10

I want to install GPC on windows XP or red hat linux. Plesae guide me on which this installation is easy ,and how can i install it . Thanks

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Re: gpc installation support
by Maurice Lombardi 23 Feb '10

23 Feb '10

kriti panday a écrit : > HELLO > Please tell me how can i get support for gpc installation.To which mail > ID ,i will send my question. > Please support me.Tell me the procedure for GPC installation on Unix. send mail to the gpc list, not to gpc-doc which is specialized and pretty dead download the latest gpc snapshot http://www.math.uni.wroc.pl/~hebisch/gpc/gpc-20070904.tar.bz2 and gcc sources for backend (3.4.x and 4.1.x are fine) The instructions are in p/INSTALL in the gpc snapshot: in Unix better compile the compiler than install binaries. There has been posted in this list a script to automate the building, but I never used it. Maybe the author will give the reference. Maurice -- Maurice Lombardi Laboratoire de Spectrometrie Physique, Universite Joseph Fourier de Grenoble, BP87 38402 Saint Martin d'Heres Cedex FRANCE Tel: 33 (0)4 76 51 47 51 Fax: 33 (0)4 76 63 54 95 mailto:Maurice.Lombardi@ujf-grenoble.fr

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