Gpc February 1999

gpc@gnu.de

24 participants
29 discussions

gpc segmentation fault
by Patrick Goetz 09 Feb '99

09 Feb '99

Hi - A couple of days ago I called to report random segmentation faults when running simple gpc compiled programs under linux 2.2.0-pre4. I'm just writing back to report that we discovered what the bug is, and it has nothing to do with gpc. Apparently linux 2.2 is suffering from a rather serious NFS bug which causes a byte to be lost during file transfer. Losing a byte when trying execute a program of course most likely result in a segmentation fault. This explains why the problem was inexplicably sporadic. Sorry for the bad bug report. ********************************************** The meek shall inherit nothing. - Frank Zappa ********************************************** _ Patrick Goetz _| ~-. Dept. of Mathematics \, *_} The University of Texas at Austin pgoetz(a)mail.utexas.edu \( Austin, Texas 78712-1084 Phone: (512) 232-2746 http://www.ma.utexas.edu/users/pgoetz

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Segmentation fault when using gpc 2.0 with linux 2.2.0-pre4
by Patrick Goetz 09 Feb '99

09 Feb '99

Hi - I've been running gpc version 2.0 on my linux 2.0.x machines without any problems. Recently we upgraded some of them to linux 2.2.0-pre4. Now, simple arithmetic assignments cause segmentation violations. For example, program add2(input, output); var first : real; second : real; sum : real; begin write('Please enter the first value: '); readln(first); write('Now enter the second value: '); readln(second); sum := first / second; writeln(first, ' div ', second, ' is ', sum); end. compiles OK, but causes a segmentation violation, but not consistently. If I compile it again adding, say a single space somewhere, it runs fine the next time.

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Re: bug??
by Frank Heckenbach 08 Feb '99

08 Feb '99

Maurice Lombardi wrote: > Hi all > I obtain abort! when compiling this short program > > program essai; > var c:complex; > begin > c:=cmplx(1,5); > c:=c/2.0; > end. > > dividing a complex by a real does not work, > with * it works, even with /cmplx(2.0,0.0); Yes. :-( I'm adding it to the list of known bugs (maur4.pas). At least you have a workaround... Frank -- Frank Heckenbach, frank(a)fjf.gnu.de http://fjf.gnu.de/ PGP and GPG keys: http://fjf.gnu.de/plan

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bug??
by Maurice Lombardi 08 Feb '99

08 Feb '99

Hi all I obtain abort! when compiling this short program program essai; var c:complex; begin c:=cmplx(1,5); c:=c/2.0; end. dividing a complex by a real does not work, with * it works, even with /cmplx(2.0,0.0); What is broken ? (I work with DJGPP / gpc-19990118_i386-pc-djgppv201.zip) thanks in advance ! -- 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 51 45 44 mailto:Maurice.Lombardi@ujf-grenoble.fr

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Beta
by Oliver Puetz 08 Feb '99

08 Feb '99

Hi I've downloaded the beta binary "gpc-19990118.mips-sgi-irix6.2.tar.gz" for our SGI power challenge, but there is still a problem. GNU is already installed, and when compiling a little test program, GPC answers: ld32: FATAL 9: I/O error (-lgpc): No such file or directory There are no environmental variables defined, as GPC seems not to use GPC_EXEC_PREFIX. Only when adding the dir with -B, GPC finds e.g. CRTBEGIN.O. Can anyone help? Thanks in advance Oliver

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None
by Stephan Goetter 06 Feb '99

06 Feb '99

Hi, after your announce i've the follow. feature request: Linking OOP-ObjectPascal-Progs to (shared) C++-Libs ! Of course you can't use templates and exceptions and so on, but it would be really useful. Regards, Stephan

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Re: GNU Pascal
by Frank Heckenbach 03 Feb '99

03 Feb '99

Peter Gerwinski wrote: > The African Chief wrote: > > > > [...] WinCRT is not a > > direct port of the Dos "crt" unit (although there are several > > compatible routines such as Readkey, GotoXY, etc), but is rather a > > wrapper around several WinAPI calls to produce a standard > > Windows window - but one that can process Readln/Writeln/Readkey > > calls, etc. [...] It's mostly a port of the Dos Crt unit -- though a lot is missing, and there are a few additions (some of them are emulated in GPC's CRT unit), but these additions are not essential for normal usage. > Unless I am missing something, the same holds for the X11 > version of our CRT unit (replacing "WinAPI" with "X11 API", > encapsulated in some `*curses' library). So `uses CRT' with > GPC should give the desired result. Yes. > > - but this would not result in an X application - is this > > correct, Peter? > > If you follow the instructions in `crt.pas' you can produce an > X11 application as well as a console application (that will of > course run under X11 without any restrictions) - just at your > option. > > (However I noticed some problems with the window not being > selectable under X11. Somebody knows what happens there?) Seems to be a library problem: GPC reverses the order of libraries in a `{$L}' directive. Obviously, the X libraries don't like that too much... So it's up to you to fix it. ;-) Frank -- Frank Heckenbach, frank(a)fjf.gnu.de http://fjf.gnu.de/ PGP and GPG keys: http://fjf.gnu.de/plan

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GNU Pascal
by Rees 03 Feb '99

03 Feb '99

Dear GNU Pascal development team, I wonder if you could please answer a couple of quick questions for me. I have been using Borland TPW1.5 and have many thousands of line of Pascal code , some for the WinCrt unit but mainly have used WObjects,WinTypes, WinProcs,Strings & BWCC units in combination with OOP programming and resources defined in the resource workshop. I will be switching to Linux before the end of the year and departing the Windows platform forever. GNU Pascal looks like it will be the perfect replacement for TPW1.5 and still mean I can retain the same(or similar) code. If I compile my programs in GNU Pascal will they work directly (i.e does GNU Pascal convert all the calls to XWindows calls) or will they have to be run via the Linux filter Wine ? The other possibility is how easy would it be to convert my current programs to Linux/Xwindows programs making use of your Linux libraries ? Thankyou for your help, I have only found out about GNU Pascal today and am very pleased that someone is producing such a language & compiler. Best Regards Kevin Rees

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unsubscription
by Matthew Wiggins 03 Feb '99

03 Feb '99

I tried sending mail to the subscribe address, but nothing happened, please unsubscribe me. /Matthew Wiggins[, lithium] lithium(a)bong.triax.com

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Gpc February 1999