Gpc

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5400 discussions

grx again
by Toby Ewing 05 Jun '03

05 Jun '03

Hi, all I'm doing a new install of gpc with grx2.45 on a Win2000 machine. (1) The recent change in the compiler, from recognizing "integer(32)" to requiring "integer attribute (size=32)", means I needed to change line 59 of the grx.pas file accordingly. No biggie, just info. (2) My computer uses 1024 x 768 pixels in 16-bit color when running windoze programs, but the c-compiled modetest demo won't go higher than 1) 1024 x 768 x 1-bit, or 2) 640 x 400 x 8-bit. When I run the Pascal modetest.pas, it exits with error 1: GrSetMode: could not find suitable video driver. Am I missing some critical files? No windoze programs have complained about my video. thanks, Toby

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GCC and gpc
by Andreas Meier 05 Jun '03

05 Jun '03

Hello, now it is planned to integrate g95 in gcc. So my question: Is it planned to integrate gpc in gcc and when? Greats Andi -- +++ GMX - Mail, Messaging & more http://www.gmx.net +++ Bitte lÃ¤cheln! Fotogalerie online mit GMX ohne eigene Homepage!

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Overriding non-virtual methods by virtual ones
by Frank Heckenbach 05 Jun '03

05 Jun '03

I recently came about the issue of overriding non-virtual methods by virtual ones. GPC currently allows this, but it may be slightly confusing. BP allows it as well, so we shouldn't forbid it. But should we warn? (Always or unless `--borland-pascal' was given?) type a = object procedure p; end; b = object (a) procedure p; virtual; end; Frank -- Frank Heckenbach, frank(a)g-n-u.de, http://fjf.gnu.de/, 7977168E GPC To-Do list, latest features, fixed bugs: http://www.gnu-pascal.de/todo.html GPC download signing key: 51FF C1F0 1A77 C6C2 4482 4DDC 117A 9773 7F88 1707

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BUG REPORT: function (n: LongCard): String(64); -- bug or not allowed?
by Mirsad Todorovac 04 Jun '03

04 Jun '03

Hi, Frank! ------------------------------------------------------- program mirsad16(output); function testproc (n: LongCard): String(64); begin n := n; return 'OK'; end; begin WriteLN (testproc (42)); end. ------------------------------------------------------- bash-2.05b$ gpc -Wall mirsad16.pas mirsad16.pas:4: warning: missing string capacity -- assuming 255 mirsad16.pas:4: parse error before `(' I couldn't find in reference docs whether this is actually banned by specification, or is it a bug in parser. Thanks, Mirsad -- "I have a dream!" -- Martin Luther King Jr. "You can't hold someone down ... without staying down with him." -- Booker T. Washington "... one thing is for sure about the rat race: Even if you win, you're still a rat." -- S. Baars

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Re: Overriding non-virtual methods by
by Theo Carr-Brion 04 Jun '03

04 Jun '03

I am a delphi programmer. Nearly all Delphi code relies on the fields of an object being set to zero automatically. If gpc wishes to be compatible with Delphi it must have the option to do the same. In Delphi you cannot use an abject without calling its constructor so the initialisation of virtual methods is always done. Theo Carr-Brion -----Original Message----- From: Jason Burgon [mailto:gvision@ntlworld.com] Sent: 04 June 2003 08:58 To: gpc(a)gnu.de Subject: Re: Overriding non-virtual methods by Prof A Olowofoyeku (The African Chief) wrote: > PS: I know that, under BP and Delphi, a call to the constructor > automatically zeroes out all the object's fields as appropriate (e.g., > pointers are set to Nil, numbers are set to zero, and strings are set > to empty). This is not the case with BP or Delphi "object"s. It is Turbo Vision's TObject.Init (a constructor) that provides this functionality; it is not an inherent feature of an "object". In Delphi, all "class"es must be a descendant of TObject (a special class known to the compiler), and this also probably does field zeroing in Delphi classes. Jay Jason Burgon. Author of Graphic Vision Version 2.21 available from: http://homepage.ntlworld.com/gvision

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ArcSin, ArcCos
by Frank Heckenbach 02 Jun '03

02 Jun '03

For now I'm using the libm routines, since I'm not convinced that the alternatives are really better. For complex numbers, I'm adding the following, rather simple, routines. If Emil (or someone else) wants to provide more optimized/numerically stable versions, let me know. function Complex_ArcSin (z: Complex): Complex; var t: Complex; begin t := Ln (Cmplx (-Im (z), Re (z)) + SqRt (1 - Sqr (z))); Complex_ArcSin := Cmplx (Im (t), -Re (t)) end; function Complex_ArcCos (z: Complex): Complex; var t: Complex; begin t := Ln (z + SqRt (Sqr (z) - 1)); Complex_ArcCos := Cmplx (Im (t), -Re (t)) end; Frank -- Frank Heckenbach, frank(a)g-n-u.de, http://fjf.gnu.de/, 7977168E GPC To-Do list, latest features, fixed bugs: http://www.gnu-pascal.de/todo.html GPC download signing key: 51FF C1F0 1A77 C6C2 4482 4DDC 117A 9773 7F88 1707

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Problems with installing GPC under Red Hat 9
by Tomasz Kowaltowski 02 Jun '03

02 Jun '03

I installed gpc-2.1-with-gcc.i686-pc-linux-gnu.tar.gz under my previous Linux (Red Hat 8.) and it worked without any problems. I did the same under Red Hat 9. When I tried to compile a program 'gpc' complained: gpc: installation problem, cannot exec `gpcpp': No such file or directory I put then in /usr/local/bin a symbolic link: gpcpp ->/usr/local/lib/gcc-lib/i686-pc-linux-gnu/2.95.3/gpcpp Now I got the message: gpc: installation problem, cannot exec `gpc1': No such file or directory I added the link: gpc1 -> /usr/local/lib/gcc-lib/i686-pc-linux-gnu/2.95.3/gpc1 Now I got a series of messages from the linker; some of them: --------------------------------------------- /usr/local/lib/gcc-lib/i686-pc-linux-gnu/2.95.3/libgpc.a(rts.o)(.text+0x5d6): In function `_p_LocaleUpCase': /home/frank/gpc/gcc-2.95.3/gcc/p/rts/rts.c:838: undefined reference to `__ctype_toupper' /usr/local/lib/gcc-lib/i686-pc-linux-gnu/2.95.3/libgpc.a(rts.o)(.text+0x5ea): In function `_p_LocaleLoCase': /home/frank/gpc/gcc-2.95.3/gcc/p/rts/rts.c:846: undefined reference to `__ctype_tolower' /usr/local/lib/gcc-lib/i686-pc-linux-gnu/2.95.3/libgpc.a(rts.o)(.text+0x5fe): In function `_p_IsUpCase': /home/frank/gpc/gcc-2.95.3/gcc/p/rts/rts.c:851: undefined reference to `__ctype_b' (... more deleted ...) ----------------------------------------------- Any idea what the problem is? I am not a Linux expert and would appreciate simple advice :-). Please send a copy of the answer to my address because I am not a subscriber to this list. Thanks! -- Tomasz Kowaltowski

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problems with GPC/Mac OS X
by Boris Herman 01 Jun '03

01 Jun '03

Hello I have DLed the newest version listed and the Dec2002 Developer Tools from Apple and have proceeded to work on a more complex project. However, I am unable to compile the source - it gives me this error: > alan.pas: In procedure `f_b': > alan.pas:577: internal 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. > Any ideas? If anyone cares to look into it I have attached the source, the preprocessed source and the data file needed to run it. Regards, Boris

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Could anyone please tell me how GPC will align variables of most used types by default on Intel platform? (+)
by Ingvar Marny 29 May '03

29 May '03

Hi, dear All. I have made exhaustive (at least, hope so) search in the documentation and mail list archives but found only that "GPC will align variables according to maximum performance", but how exactly? On what boundary will be aligned Integer, Boolean, Longint, Word, etc. On what boundary will be aligned string, record, array, their elements and are there any differences between default alignment of variable without record and variable as record field? And, if possible, I need information for the other platforms. I understand that I can make experiments to find it out but it seems to me it should appear in one or in other place (GPS manuals or mailing lists). Thanx, dear All. Best regards, Ingvar mailto:marny@rambler.ru

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Upper/lower case in identifiers
by Frank Heckenbach 22 May '03

22 May '03

As you probably know, GPC currently converts all identifiers to first letter upper-case/rest lower-case. Since this is often not nice, I plan to change this. This would affect at least the following things: - error messages - the file name chosen with `--transparent-file-names' (makes a difference only on case-sensitive file systems, i.e. not Dos/Windows); is this ok (to those who use this option)? - the file name prompt with external files without binding While I'm at it, it might be easy to add a warning if an identifier is used with varying case (something like `var Foo: Integer; [...] WriteLn (FOO)'). - Any ideas for the name of the option? (`-Widentifier-case'?) - Default? (I suppose off, though I think I myself would prefer on.) - Should it work across units/modules? Or should it be a tri-state option (never/current file/global)? Frank -- Frank Heckenbach, frank(a)g-n-u.de, http://fjf.gnu.de/, 7977168E GPC To-Do list, latest features, fixed bugs: http://www.gnu-pascal.de/todo.html GPC download signing key: 51FF C1F0 1A77 C6C2 4482 4DDC 117A 9773 7F88 1707

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