Gpc October 1997

gpc@gnu.de

31 participants
158 discussions

gpc on Linux
by tomko＠tt62.ntfmim.uni-lj.si 27 Oct '97

27 Oct '97

When compiling pas files with gpc I get a message: cannot open -lgpc: No such file or directory Version of gpc and gcc is 2.7.2.1 Can somebody help? T.Kolenko

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Re: Re: Need help.......
by OHMH＠nets.com.jo 27 Oct '97

27 Oct '97

Ron Perrella,perrella(a)mindspring.com,Internet writes: > * > * And how to access the program parameters from an ASM program. > > Thanx for your help > Hi I don't know what you mean by parameters but if you mean procedure and function parameters then read this if you mean command line then this will not the answer : - Procedure Putpix ( x , y : word ; c : byte ); Assembler ; Asm Push x Push y Push c . . . . End; That was on … [View More]

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Re: us_Timer in TimeStamp
by Peter Gerwinski 27 Oct '97

27 Oct '97

According to Thomas Tan: > Are you guys going to implement us_Timer field of TimeStamps soon? If you tell us how to do that in a portable way - at once! ;-) > I need a seed for a random function and this seems to be the best way to go. On 21 September, Frank Heckenbach posted a Unit `Rand' to this list which implements a `random' and a `randomize' function just this way. You can extract it from the GPC mailing list archives (see http://home.pages.de/~GNU-Pascal/support.html) or … [View More]

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Re: Error in Beta version (100197)
by Frank Heckenbach 27 Oct '97

27 Oct '97

Thomas Tan wrote: > I get the following error when I try to compile this program in GPC beta > (100197) for DJ > Compiling: assign7Sort.pas > gpi-hash.c(321) Error: failed assertion `ss.key == -DEBUG_HASH_KEY' > Abort! At the moment I'm only guessing, but I got the same error messages when I was trying to use a unit compiled with an older GPC version. The .gpi files (precompiled unit interfaces) are not compatible between different GPC versions, and unfortunately (currently)… [View More]

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Error in Beta version (100197)
by Thomas_Tan＠fc.choate.edu 27 Oct '97

27 Oct '97

I get the following error when I try to compile this program in GPC beta (100197) for DJ Compiling: assign7Sort.pas gpi-hash.c(321) Error: failed assertion `ss.key == -DEBUG_HASH_KEY' Abort! This program compiled fine under the 2.0 verison of GPC, this program does use BPcompat. The source of this program is attached to this message (open it in Rhide if you want to "see" the line breaks) and I also attached the output of the bug-report-generator from Rhide. Good thing I backed up my GPC 2.… [View More]

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Need help.......
by The Kilobug Team 27 Oct '97

27 Oct '97

Hi! I'm trying to make a DOS "shell", to improve the limited COMMAND.COM function. In order to reduce memory usage, I need help... Does one of you: * Know a Pascal or C compiler which can make COM programs, * Know how to execute programs from an ASM program, * And how to access the program parameters from an ASM program. Thanx for your help -- -= The Kilobug Team =- DOS Real&Protected mode programming. Home page: http://www.planetepc.fr/users/… [View More]

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us_Timer in TimeStamp
by Thomas_Tan＠fc.choate.edu 26 Oct '97

26 Oct '97

Are you guys going to implement us_Timer field of TimeStamps soon? I need a seed for a random function and this seems to be the best way to go. ------------------------------------------------------ This message sent using the FirstClass SMTP/NNTP Gateway. From: Choate Rosemary Hall 333 Christian St. Wallingford, CT. 06492

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Re: EFLIB strategy and encouragement
by Peter Gerwinski 26 Oct '97

26 Oct '97

Hi, Johan; hi, everybody! According to Johan Larsson: > > EFLIB is licensed under a GNU compatible license which is not ready. Didn't you write in your last mail that you want to charge for commercial use of EFLIB? If so, the license would *not* be GNU compatible because it is an essential component of the GNU GPL and the GNU LGPL that there is no distinction between commercial and non-commercial use of a program or a library. Peter Dipl.-Phys. Peter Gerwinski, Essen, Germany, … [View More]

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EFLIB strategy and encouragement
by Johan Larsson 26 Oct '97

26 Oct '97

* The EFLIB project have changed strategy: we now aim to establish a standard template library for every Pascal programmer. Hello all, * Introduction EFLIB is a free object-oriented library aiming to become an open standard for all Pascal programming languages. EFLIB includes data structures packaged in classic ADT's, data streams, filtering and conversion, text processing, mathematics (including matrices, complex numbers and vectors). A cross-platform GUI is planned for EFLIB. EFLIB is … [View More]

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Re: Objects question
by Peter Gerwinski 25 Oct '97

25 Oct '97

According to Thomas Tan: > When I took a look at objects.pas in the \test\borland_\ directory (a copy > below), a few questions raise to mind. > [...] > Program Objects;(* Bug fixed: objects only worked in units, not in programs. > *)Type ParentPtr = ^ParentObj; ChildPtr = ^ChildObj;ParentObj = object > Constructor Init; Destructor Fini; Procedure O; c: Char; [...] To me, too. Either your mailer's text editor or your "FirstClass SMTP/NNTP GateWay" or something else … [View More]has eaten up all line breaks in the source. Or is this just a joke? > 1. Does the character c have to be desposed in the destructor? Of course, not. Only *pointer* variables have to be disposed in the destructor. This is the same with GPC as with BP. > If so, is char > (0) a null character? It is, although this has nothing to do with `Dispose'. > 2. If there are variables (character, arrays ,strings, etc) in a function in > an object, do they have to be manually deleted? Only if they are pointers. > If so, how would I erase each one of them? A modified version of the `objects.pas' test program follows below. Please note that this is a test program which has the only purpose of testing whether the OOP mechanisms in GPC work correctly. For demo programs you can see section "OOP" in the GPC Texinfo online documentation (`info -f gpc -n OOP'). It's not too detailed, but it documents how GPC's OOP differs from that of BP. Since these differences are rather small, any book about "OOP with BP" can help you with GPC, too. > 3. Is there such a thing as a pointer to a function? Yes: Type ProcPtr = ^Procedure; FuncPtr = ^Function ( x: Real ): Real; If you omit the `^', you have BP's "procedural variables" which work in GPC, too. (* Here and in my other mails, I am referring to recent beta versions of GPC, not to the hopelessly outdated gpc-2.0 from December 1996. ;*) Hope this helps, Peter Dipl.-Phys. Peter Gerwinski, Essen, Germany, free physicist and programmer peter.gerwinski(a)uni-essen.de - http://home.pages.de/~peter.gerwinski/ [971005] maintainer GNU Pascal [971001] - http://home.pages.de/~gnu-pascal/ [971005] 8< -------------------------------------------------------------------------- Program Objects; Type StringPtr = ^String; ParentPtr = ^ParentObj; ChildPtr = ^ChildObj; ParentObj = object S: StringPtr; Constructor Init ( Const SomeString: String ); Destructor Fini; Procedure O; c: Char; (* GNU extension: mixing of fields and methods *) Procedure K; virtual; end (* ParentObj *); ChildObj = object ( ParentObj ) Procedure O; Procedure K; virtual; end (* ChildObj *); Var MyObject: ParentPtr; Constructor ParentObj.Init ( Const SomeString: String ); begin (* ParentObj.Init *) New ( S, length ( SomeString ) ); S^:= SomeString; c:= 'K'; end (* ParentObj.Init *); Destructor ParentObj.Fini; begin (* ParentObj.Fini *) Dispose ( S ); end (* ParentObj.Fini *); Procedure ParentObj.O; begin (* ParentObj.O *) write ( 'O' ); end (* ParentObj.O *); Procedure ParentObj.K; begin (* ParentObj.K *) write ( 'y' ); end (* ParentObj.K *); Procedure ChildObj.O; begin (* ChildObj.O *) write ( 'x' ); end (* ChildObj.O *); Procedure ChildObj.K; begin (* ChildObj.K *) inherited K; writeln ( chr ( 8 ) + c ); end (* ChildObj.K *); begin MyObject:= New ( ChildPtr, Init ( 'Hello, world!' ) ); with MyObject^ do begin O; K; writeln ( S^ ); end (* with *); Dispose ( MyObject, Fini ); end. (* The output should be: *) (* OK *) (* Hello, world! *) [View Less]

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Gpc October 1997