Gpc April 2005

gpc@gnu.de

23 participants
26 discussions

Re: Who uses Pascal? Part 2
by Andrew Gregory 05 Apr '05

05 Apr '05

> On Thu, 31 Mar 2005, John L. Ries wrote: > > > On Thu, 31 Mar 2005, John Ollason wrote: > > > > > My main reason for asking the question was to try to find > out if there > > > would be any interest in a modern primer, based on GPC, > as an introduction > > > to scientific programming. Years ago, with a colleague, > we talked of > > > writing a book entitled 'Brute force programming' which > was designed for > > > scientists. One very important group of users are those who need to maintain legacy code. I have a mix of programs written in C, C++, VMS and HP Pascals, and Fortran 77, in some cases written 20 years or more ago. I converted the whole lot to Python modules. The result: A huge improvement in usability, as I can use all these modules from simple scripts. I can now do many things easily that were previously too awkward and time-consuming to contemplate. Furthermore, the use of GCC compilers will help portability. Users of these modules need only know one language - Python (which is an Algol family language). I think that Pascal is still one of the better compiled languages. For someone who wants to write GUI applications on Windows, Delphi is a good choice because of features such as the form designer. But things have moved on: Powerful dynamic scripting languages such as Python contain a lot of new thinking, and really do save time in many applications (e.g. data processing). There is a good case for writing core functions (e.g. maths) in a compiled standardised language such as Pascal or extended Pascal, which will be around for decades, then writing interfaces to scripting languages as required. Unfortunately, to interface Python and gpc, you have to go via C, so for new code it's tempting just to use C. I suspect that many of the Pascal books are now out of print. I once used "Pascal Programs for Engineers and Scientists", author Alan R Miller, published in 1985. I don't think that I'm qualified to say how big a market there would be for the proposed new book. Although I don't contribute much to this list either, I would like to say thank you to the maintainers of gpc for improving it and keeping it up to date with GCC. Andrew Gregory. ------------------------------------------------------------------- This e-mail and any attachments may contain confidential and/or privileged material; it is for the intended addressee(s) only. If you are not a named addressee, you must not use, retain or disclose such information. NPL Management Ltd cannot guarantee that the e-mail or any attachments are free from viruses. NPL Management Ltd. Registered in England and Wales. No: 2937881 Registered Office: Serco House, 16 Bartley Wood Business Park, Hook, Hampshire RG27 9UY United Kingdom -------------------------------------------------------------------

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Re: GPC ALPHA 20050331 released
by Waldek Hebisch 04 Apr '05

04 Apr '05

Since the WWW server seem to be down I have put a copy of "minimal" snapshot at my web page: http://www.math.uni.wroc.pl/~hebisch/gpc/gpc-20050331-minimal.tar.bz2 Note that this requires that you have bison-2.0. -- Waldek Hebisch hebisch(a)math.uni.wroc.pl

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Re: GPC ALPHA 20050331 released
by James A. Morrison 04 Apr '05

04 Apr '05

> > A diff is available at > > http://www.csclub.uwaterloo.ca/~ja2morri/pascal/200502-200503.diff.gz > > I have tried to use it because of current gpc server unavailability. > I does not work as is because of missing files, > notably predef.h which was renamed as predef.def. > A new diff is at http://www.csclub.uwaterloo.ca/~ja2morri/pascal/200502-200503-1.diff.gz -- Thanks, Jim http://phython.blogspot.com

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Who uses Pascal? Part 2
by John Ollason 01 Apr '05

01 Apr '05

My main reason for asking the question was to try to find out if there would be any interest in a modern primer, based on GPC, as an introduction to scientific programming. Years ago, with a colleague, we talked of writing a book entitled 'Brute force programming' which was designed for scientists. The design cycle was based on our appreciation of the fact that for our modelling work most of the time was spent on the development of the code, and only a small proportion spent on production running. This meant that we weren't concerned with saving bytes or running efficiently. All we wanted was to get our ideas coded and tested as conveniently (for us) as we could manage. We were teaching ISO Pascal level 0 at the time and thought that this would be the ideal language for our purposes. I am not sure that there is enough interest to make it worthwhile, or indeed, if our irresponsible approach would be valued by the wider programming community. John O.

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gcc 3.4.4 diff
by James A. Morrison 01 Apr '05

01 Apr '05

Hi, I'm trying to compile gpc with gcc 3.4 from cvs. To get gcc patched for gcc 3.4.4 I needed the attached diff. The only real change is in varasm.c:3610 where dest_type is used instead of TREE_TYPE (value) and src is used instead of TREE_OPERAND (value, 0) -- Thanks, Jim http://phython.blogspot.com

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gpc-20050331 test results
by Russell Whitaker 01 Apr '05

01 Apr '05

hi Reading specs from /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.3.5/specs Configured with: ../gcc-3.3.5/configure --enable-languages=c,pascal Thread model: posix gpc version 20050331, based on gcc-3.3.5 test results were: # tests 4946 # expected passes 4940 # unexpected fail 5 # unsuported 1 failures were: fjf1021d.pas, fjf1021h.pas, fjf1021i.pas, fjf1021j.pas, fjf1021k.pas as these look alot alike, tried this: program modtest; var a: integer = 42; type t(b:integer) = integer value b mod 4; var b:t(99); begin writeln(b); end. and the result i got: <implicit code>: In main program: <implicit code>:10: internal compiler error: in make_decl_rtl, at varasm.c:797 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://www.gnu-pascal.de/todo.html> for instructions. Over all: GOOD JOB russ

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Gpc April 2005