Gpc June 2005

gpc@gnu.de

22 participants
36 discussions

GDB vs GPC
by Pascal Viandier 20 Jun '05

20 Jun '05

Hi, I use gpc 20050331 build with gcc 3.4.3 on SUN Solaris2.6. I have gdb 5.3 installed, but it does not work very well with gpc: - The current source line is wrong most of the time - 'Next' do strange steps backward and forward - I cannot see strings contents (it says incomplete type) - Arrays of characters are displayed as binary (0's and 1's) - Some randomized gdb coredumps - Program does not stop where I put the breakpoints, but some lines before or after I use DDD on top of gdb, but I have exactly the same problems when I use gdb alone. Since I am presently converting a lot of code from SUN Pascal to gpc, the debugger is somewhat essential... So, is there a 'recommended' version of gdb to use with gpc 20050331? Also, are there some 'recommended' gdb settings for gpc? Thanks Pascal Viandier pascal(a)accovia.com

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Segfault when calling Pascal RuntimeError from within C code
by Markus Gerwinski 18 Jun '05

18 Jun '05

Hi Folks, I attached some test code to this mail that reproduces a bug in GPC that just occurred in one of my projects. In short: When I link a Pascal unit to a C project, and a function in the Pascal unit calls RuntimeError, this results in a segfault when called from within the C code. (I'm using gpc-20050331 together with gcc-3.4.3.) Pure Pascal projects are not affected, there the RuntimeError just works fine. Yours, Markus

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GPC on i686-apple-darwin
by Adriaan van Os 16 Jun '05

16 Jun '05

I installed the x86 version of the Mac OS X kernel (Darwin 7.2.1) on a PC and I am now trying to build GPC-20050331 with gcc-3.3.6 for i686-apple-darwin. I checked that the C compiler bootstraps. The Pascal build stops at heap.pas:38 with the message error.gpi must be recompiled. An rts makefile problem ? I can provide more information as needed. Regards, Adriaan van Os

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Re: Pascal front-end integration
by Adriaan van Os 15 Jun '05

15 Jun '05

James A. Morrison wrote: > I've decided I'm going to try to take the time and cleanup and update > the Pascal frontend for gcc and try it get it integrated into the > upstream source. Can you give us some news on the progress ? Regards, Adriaan van Os

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TclExpect and Pascal
by Rick Engebretson 15 Jun '05

15 Jun '05

The EXPECT extension to TCL is made for controlling and communicating with other user specific programs. Pascal user specific programs would be perfect. TCL was developed at UCBerkeley and Sun. Expect was developed at the US NIST. Nice, stable, well documented, public domain software. Pascal is the weak link. You are very talented people with GPC. I really appreciate CBFalconer's concerns.

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Symbol names clash
by Pascal Viandier 14 Jun '05

14 Jun '05

Hi, While converting some SUN Pascal Code to GNU Pascal, I encounter a problem of symbol name clash: I have a module named 'Screen' that contains (and exports) a procedure named 'Screen'. When I compile the module, there is no problem, but when I want to Import SCREEN in an other module, the compiler produces an error on the Import line saying: bad import, and an other saying 'redeclaration of 'Screen'. So it looks like one cannot have a module and a procedure with the same name. However the two are very different entities - from my point of view -. Are there other possible entities conflicts? (variable or type names) Is there a way to circumvent this problem? Thanks Pascal Viandier pascal(a)accovia.com

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Re: GPC ALPHA 20050331 released
by Adriaan van Os 12 Jun '05

12 Jun '05

Below are the testsuite results for gpc-20050331 with gcc-3.4.3 on powerpc-apple-darwin. Regards, Adriaan van Os [G5:gcc/p/test] adriaan% make EXTRA_PFLAGS=--longjmp-all-nonlocal-labels rm -f *.dat *.o *.s *.i *.gpi *.gpd *.gpc core a.out stderr.out *.exe testmake.tmp dummy.c dummy.pas dummy.out diff_cr*.tmp fixcr fixcr.exe rm -f todo/a.out todo/*.exe todo/*.o todo/*.s todo/*.i todo/*.gpi todo/*.gpd todo/core GP= PC="gpc" PFLAGS=" --autobuild -g -O3 -W -Wall -Wno-unused --longjmp-all-nonlocal-labels " PFLAGS_NO_PATHS="-g -O3 -W -Wall -Wno-unused --longjmp-all-nonlocal-labels " SRCDIR="." TEST_MAKE_FLAG=test-make-flag "./test_run" "*.pas" | tee test_log | "./test_sum" -d Test Run By adriaan on 2005-06-12 18:33:59 Native configuration is powerpc-apple-darwin7 (G5.local) === gpc tests === Running target any Running testsuite ... UNSUPPORTED: agettext2test.pas UNSUPPORTED: agettexttest.pas UNSUPPORTED: aregextest.pas UNSUPPORTED: asmtest.pas FAIL: chief56.pas FAIL: fjf1021d.pas FAIL: fjf1021h.pas FAIL: fjf1021i.pas FAIL: fjf1021j.pas FAIL: fjf1021k.pas UNSUPPORTED: fjf165a.pas FAIL: fjf998r.pas UNSUPPORTED: gmptest.pas UNSUPPORTED: longr2.pas FAIL: systemtest.pas === gpc Summary === # of tests 4946 # of expected passes 4931 # of unexpected failures 8 # of unsupported tests 7 gpc version 20050331, based on gcc-3.4.3 [G5:gcc/p/test] adriaan% gpc -v Reading specs from /Developer/Pascal/gpc343d8/lib/gcc/powerpc-apple-darwin7/3.4.3/specs Configured with: ../gcc-3.4.3/configure --enable-languages=pascal,c --enable-threads=posix --target=powerpc-apple-darwin7 --host=powerpc-apple-darwin7 --prefix=/Developer/Pascal/gpc343d8 Thread model: posix gpc version 20050331, based on gcc-3.4.3

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Question on procedure parameters
by Pascal Viandier 12 Jun '05

12 Jun '05

Hi, I have a question regarding arrays of characters passed as parameters to procedures. If I declare: Type Str40 = Array[1..40] Of Char; Str80 = Array[1..80] Of Char; Var S40 : Str40; S80 : Str80; S : String(50); Procedure DoArray(SParam : STRING); .. Procedure DoArrayVar(VAR SParam : STRING); ... I can call DoArray with S40, S80 and S as parameter with no problem, but I cannot call DoArrayVar with S40 or S80 (It gives the error: type mismatch in argument 1 of 'DoArrayVar' at compilation time). I don't understand why it works when the parameter is not VAR and why it does not work when it is VAR. To have DoArrayVar work, I had to remove the parameter type, and assign the parameter S to a local variable pointer to a Str80. It works for S40 and S80 but not anymore for S. Is there a way to declare a VAR parameter that would accept S40, S80 and S? Or is there a way to disable temporarily the type checking? Or something else ;-) Thanks Pascal Viandier pascal(a)accovia.com

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[Fwd: Re: source code formatting]
by Maurice Lombardi 12 Jun '05

12 Jun '05

Any body here has a copy ? -------- Message d'origine -------- Sujet: Re: source code formatting Date: Sat, 11 Jun 2005 15:40:29 +0100 De: Maurice Lombardi <Maurice.Lombardi(a)ujf-grenoble.fr> A: eng(a)pinenet.com Références: <8C73C552CB889D8-BD4-B903(a)mblk-d31.sysops.aol.com> <42AAB4E6.5060907(a)pinenet.com> Rick Engebretson a écrit: > mingeborg(a)aol.com wrote: > >> We have a large GPC application with inconsistent source code >> formatting - unpredictable indentation, several statements on one >> line, etc. >> >> Is there a quick and easy way to fix this? For instance, can any of >> the available GUI interfaces be used to reformat the code? There has been a formatting program pindent written by Peter Gerwinskii. But the goc mailing list and archives are down. 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 -- 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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TclX with Unix
by Rick Engebretson 11 Jun '05

11 Jun '05

My apologies for rambling on, here. My earlier point was that I believe Pascal has a different context in Unix(Linux) than it did in DOS or with Delphi. Unix has many existing tools that do what Pascal does on other platforms. But Pascal can replace C for low level Unix programming. For those who might be interested, TclX is quite a Unix system shell extension to TCL. The last source version I found was 8.35 at sourceforge. It compiles with TCL8.4, but I'm trying it with TCL8.35. I had problems but I always have problems :) TclX includes system calls to fork, and other process management system calls. Exec can then launch a GPC program. In other words, you can create a process "multiplexer" of many Pascal programs running independently from a controller parent process. Robotics?? Signals are also dealt with in TclX. As well, stdin and stdout can be piped. I don't know much about fifos and sockets and mmaps yet. Since TCL after 8.0 is compiled to bytecode (afaik), it is faster than migh be assumed.

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Gpc June 2005