Gpc August 2002

gpc@gnu.de

18 participants
17 discussions

Some strange behaviour of GPC
by Nick Ioffe 14 Aug '02

14 Aug '02

Hi! I use packed arrays of booleans and need to look for bit set and clear in them. The arrays are of different sizes, but I cannot use a conformant array. I've written function Find_First_bit_Set (buff_ptr:pointer, bit_size:integer) : integer; and then to pass Addr(bit_array) and BitSizeOf(bit_array). The problem is that for BitSizeOf (packed array of boolean) always returns me 8*SizeOf like in the following case: program tst; var aa : packed array [1..19] of boolean; begin writeln (SizeOf(aa), ' ', BitSizeOf(aa)); end. the output I get is: 4 32. what can be wrong? I use GPC 2.1 compiled on HP-UX B.11.00 Thank you in advance, Nick

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bad configuration with mingwin
by Jean-Pierre Vial 13 Aug '02

13 Aug '02

I just tried, several times, to install gpc under Mingwin. I fail every time in the same way: when I launch gpc, it does not find its own parts. 1) I get a message <<cannot exec /mingw/lib.....>> even though the required exe does exist, precisely where gpc looks for it I have a dirty workaround for this problem: if I do not set GPC_EXEC_PREFIX but put the directory /mingw/lib/gcc-lib/mingw32/2.95.3-6 in the path the executables are found. I then fall on the second problem 2) Units are not found (crt, gpc, etc...) My last attempt was with a fresh Mingwin distribution, specially downloaded form the mingwin site, with just the same version number as the gpc package, so I do not know what to do. There is no problem with the djgpp version (well, almost: the crt unit does not display accented letters !) -- Jean-Pierre Vial

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Build Problems
by Frank D. Engel, Jr. 11 Aug '02

11 Aug '02

I am trying to build GPC under IRIX. I followed the basic set of instructions from the GPC manual, or wherever it was that I found them, with the exception that I am building all of the compilers instead of just GPC (originally I tried using the specified option to only build GPC, then left it off afterward, and the result is the same). GCC Version: 2.95.3 GPC Version: 20020510 IRIX Version: 6.5.15m Using GNU make (called with the command 'gmake' under IRIX). The problem is this: The build gets to a certain point, then gives me an "internal error" in the compiler. I tried placing empty Pascal files in place of some of the originals, but the error simply changes to occur in a different source file (the original files are now restored). The error is as follows: ../.././xgpc -B../.././ -c <...> <home>/gcc-2.95.3/gcc/p/rts/string.pas <home>/gcc-2.95.3/gcc/p/rts/string.pas: In procedure 'Upcasestring': <home><.....>/string.pas: 177: Internal compiler error in 'modified_type_die', at gcc-2.95.3/gcc/dwarf2out.c:6485 Can someone please help me with this? I really want to get this working, but have not been able to get around this bug. If any further info is needed, let me know. Also, I have some experience programming in a variety of languages, etc., so if you need me to make changes/etc. and try things, I am open to suggestions -- I can at least try. I am familiar with C, thouroughly enjoy Pascal, and am somewhat knowledgeable about UNIX (I have worked with Linux, Solaris, IRIX), so I can handle the OS for the most part as well. Thank you for any help you can provide! Also: I did not see another means of bug reporting, if there is one, let me know so that I can resubmit this in the appropriate way. Thank you. ===== ======= Frank D. Engel, Jr. Please note my new address: fde101(a)yahoo.com __________________________________________________ Do You Yahoo!? HotJobs - Search Thousands of New Jobs http://www.hotjobs.com

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ANN: ZLib Unit
by Eike Lange 08 Aug '02

08 Aug '02

Welcome to the wonderful world of Zlib zlib 1.1.4 is a general purpose data compression library. All the code is thread safe. The data format used by the zlib library is described by RFCs (Request for Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format). These documents are also available in other formats from ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html This unit is based on zlib 1.1.4 Differences to zlib.h: ====================== - No underscores - ZLIB_VERSION is renamed to ZLibVersionConst - function ZlibVersion returns String - function GzEof returns boolean value - GzError returns String - SEEK_SET and SEEK_CUR are introduced in this unit as SeekSet and SeekCur. These consts are needed as the "whence" parameter to GzSeek It would be wonderful, if someone could review this unit. Download from: http://gnu-pascal.de/contrib/eike/ Eike

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Re: Some strange behaviour of GPC
by da Silva, Joe 07 Aug '02

07 Aug '02

Not sure why you are doing things this way, anyhow ... Why not eliminate the non-standard "BitSize" function?, thus : program tst; const BitArraySize = 19; var aa : packed array [1..BitArraySize] of boolean; begin ...... Also, why are you using a pointer to your array, why not simply pass it to your "Find_First_bit_Set" function as a parameter (var parameter, if you wish)? Joe. > -----Original Message----- > From: Nick Ioffe [SMTP:ioffe_nick@mail.ru] > Sent: Tuesday, August 06, 2002 5:49 AM > To: gpc(a)gnu.de > Subject: Some strange behaviour of GPC > > Hi! > > I use packed arrays of booleans and need to look for bit > set and clear in them. > > The arrays are of different sizes, but I cannot use a conformant > array. > > I've written function > Find_First_bit_Set (buff_ptr:pointer, > bit_size:integer) : integer; > > and then to pass Addr(bit_array) and BitSizeOf(bit_array). > > The problem is that for BitSizeOf (packed array of boolean) > always returns me 8*SizeOf like in the following case: > program tst; > var > aa : packed array [1..19] of boolean; > begin > writeln (SizeOf(aa), ' ', BitSizeOf(aa)); > end. > > the output I get is: > 4 32. > > what can be wrong? > > I use GPC 2.1 compiled on HP-UX B.11.00 > > Thank you in advance, > Nick >

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General GNU Pascal questions
by Heine Ferreira 06 Aug '02

06 Aug '02

Hi I am new to GNU Pascal so please forgive my basic questions. Does the compiler under Windows work in a text mode or GUI mode? Can you write GUI programs with this? Does it support ODBC or OLE DB or any particular database? Does the compiler have an IDE? Can it use DLL's or ActiveX controls? I don't understand how to download and install the Windows version. Can you help me please? Must you first install the DOS version? Thank you Heine Ferreira

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sizeof/high/getstringcapacity
by Preben Mikael Bohn 02 Aug '02

02 Aug '02

Hi all. Will sizeof(somestring) always be 9 bytes larger than high(somestring)/getstringcapacity(somestring)? Or is it just in one case I have found this... Best regards Preben ===== Computers are like airconditioners: They stop working properly if you open windows. __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com

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Gpc August 2002