Gpc March 2004

gpc@gnu.de

24 participants
41 discussions

About GPC's support of func/proc overloading
by Neil Santos 07 Mar '04

07 Mar '04

How does GPC support function/procedure overloading when it allows the declaration of parameters to be skipped when it comes to the implementation of a function/procedure? I read somewhere that a function/procedure declaration in an interface need not be duplicated for the implementation. UIM, the text referred to Extended Pascal. Say function foo is declared like this in the interface section of a module: function foo(bar : integer) : some_return_type; In the implementation, one could just do: function foo; begin {do interesting stuff here} end; Is it possible to overload foo (i.e., to accept a baz parameter, aside from bar) without resorting to having two code blocks with slightly different parameter declarations? And on a slightly related question: Does GPC support, as an extension to Pascal, optional paramaters the way Ada supposedly does? If so, could someone please point me towards the direction I should go in order to find out how? If not, does anyone else think that this would be a useful extension? Thanks for your time. -- - Neil Santos Freelance Programmer & Web Designer - - http://nsantos.f2o.org/ Free Software advocate - -----BEGIN GEEK CODE BLOCK----- Version: 3.12 GAT d+@ s+:+ a? C++++ UL*++++ P++ L++ E--- W+++(--) N-- !o !K w(++) !O M-- V? PS++ PE-- Y++ PGP+ t* 5-- X- R++ tv+ b++>+++ DI+++ D--- G e>+++++ h r++ y? ------END GEEK CODE BLOCK------ Please avoid sending me attachments created with proprietary software. See http://www.fsf.org/philosophy/no-word-attachments.html

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Problem with 20030830 alpha install
by Armsdon, Phil 06 Mar '04

06 Mar '04

Hi all, I have GPC 2.1 20020510 installed from source on a Sun solaris 2.8 machine with all the associated pre-requisites with gcc 2.95.3 I am now trying to install the alpha version of GPC 2.1 20030830 on the same machine. I am using all the same pre-requisites and the same copy of gcc 2.95.3 I am getting a problem with this compilation at teh configure stage. When I run configure --prefix=/opt/ACMLgpc --enable-languages=pascal with the alpha version, I get an error message just after I confirm the action to patch the source: *** *** Detected GCC version 2.95.3. *** GPC 2.1 requires a patch to GCC to build with version 2.95.3. *** This patch will now be applied. *** Press ENTER to continue, Ctrl-C to abort. *** *** Creating dummy ./p/Makefile.in ./configure: syntax error at line 8403: `fi' unexpected Configure in /opt/ACMLgpc/src/gcc-2.95.3/gcc failed, exiting. Has anyone seen this error message? Any idea how to fix it? Regards, Phil ----------------------------------------- The information contained in this transmission may contain privileged and confidential information and is intended only for the use of the person(s) named above. If you are not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, any review, dissemination, distribution or duplication of this communication is strictly prohibited. If you are not the intended recipient, please contact the sender immediately by reply e-mail and destroy all copies of the original message. Please note that we do not accept account orders and/or instructions by e-mail, and therefore will not be responsible for carrying out such orders and/or instructions. If you, as the intended recipient of this message, the purpose of which is to inform and update our clients, prospects and consultants of developments relating to our services and products, would not like to receive further e-mail correspondence from the sender, please "reply" to the sender indicating your wishes. In the U.S.: 1345 Avenue of the Americas, New York, NY 10105.

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Dereferencing variables of type Pointer
by Neil Santos 06 Mar '04

06 Mar '04

Isn't there any (presumably non-standard) way of dereferencing Pointer variables? The reason I ask is because I need information on the type of variable whose address a Pointer variable contains. Said type will vary, and cannot be known until runtime. If that can't be done, then could somebody please give me tips on writing generalized subroutines for reading and writing typed files? Or should I just skip both of these and just write an interface object, and implement read/write mechanisms for each structure I intend on keeping in a stream? I'd rather avoid this (for it beats the whole point of OO, IMO), but I'd do it if it can't be avoided. TIA. [Hrm... Or maybe I'll do it in Ada, with generics. But, aside from knowing Pascal which is from the same family, I know nothing of Ada.] -- - Neil Santos Freelance Programmer & Web Designer - - http://nsantos.f2o.org/ Free Software advocate - -----BEGIN GEEK CODE BLOCK----- Version: 3.12 GAT d+@ s+:+ a? C++++ UL*++++ P++ L++ E--- W+++(--) N-- !o !K w(++) !O M-- V? PS++ PE-- Y++ PGP+ t* 5-- X- R++ tv+ b++>+++ DI+++ D--- G e>+++++ h r++ y? ------END GEEK CODE BLOCK------ Please avoid sending me attachments encoded in secret formatting. See http://www.fsf.org/philosophy/no-word-attachments.html

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Compiling error GPC 21 for Sun solaries 2.6
by Doan Ngoc San 05 Mar '04

05 Mar '04

Hi, My OS is Sun Solaries2.6. I'd downloaded correct version (with gcc). When compiling error message are: ld: elf error: file /usr/local/lib/gcc-lib/sparc-sun-solaries2.6/2.95.2/libgpc.a: unknown type unable to process using elf(3E) library. ld:fatal:library - lgpc: not found. Please, help me Thanks. --------------------------------- Do you Yahoo!? Yahoo! Search - Find what youre looking for faster.

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Re: bug (?) in Time Format
by david＠tcs01.demon.co.uk 04 Mar '04

04 Mar '04

In message <40476955.1000807(a)iastate.edu> Toby Ewing writes: > > > > I suppose it's in the unit the OP was developing, so you'd have to > > take it out here. > > Correct (but what's an "OP"?). "Original Poster"? -- David James mailto:david@tcs01.demon.co.uk or mailto:david@djames.org.uk Special Stage Rally results archive <URL:http://www.tcs01.demon.co.uk/>

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detect terminal window resizing
by Doan Ngoc San 04 Mar '04

04 Mar '04

Hi, Please, help me, how to detect when terminal window resizes ? My OS is REDHAT. Thanks --------------------------------- Do you Yahoo!? Yahoo! Search - Find what youre looking for faster.

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How to start ?
by Prof. Harley Flanders 03 Mar '04

03 Mar '04

Hello O/S: Windows XP I would like to get started with GNU PAscal. What must I download to have a Pascal compiler, and possibly an IDE? The download instruction on the GNU site are not too clear. Must I download the source code for the Pascal complier, and then download a C (or other compiler) to compile the Pascal compiler? Or can I (hopefully) get the latest Pascal compiler ready to run? Thanks, HF =========================================== Prof. Harley Flanders 3533 Windemere Court Ann Arbor, MI 48105-2867 Home: 734 668 1546 harley(a)umich.edu Visiting Professor University of Michigan Dept. of Mathematics, East Hall Ann Arbor, MI 48109 734 764 6451 Secretary: 734 764 6485 FAX: 734 763 0937 ===========================================

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GPC, Mingw and gcc-3.3.3
by Prof A Olowofoyeku (The African Chief) 02 Mar '04

02 Mar '04

Hiya I built gpc-20030830 on gcc-3.3.3 under Mingw. It built okay, but there are problems with (inter alia) "FExpand". For example, this program: PROGRAM bug1; USES gpc; BEGIN Writeln (FExpand ('.')); Writeln ('Ok'); END. produces this result (gdb output): "Starting program: D:\gpc\test/bug1.exe Program received signal SIGSEGV, Segmentation fault. $0041f369 in Internalrealpath ()" Everything works fine when gpc is built on gcc-3.2.3. Anything later than that, and you get problems in Internalrealpath() as above. I am not sure why ... Best regards, The Chief -------- Prof. Abimbola A. Olowofoyeku (The African Chief) web: http://www.bigfoot.com/~african_chief/

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Re: CPU timer
by Toby Ewing 02 Mar '04

02 Mar '04

Hi, all Frank suggested using the CPU timer, and I agree that it's a much better benchmark than the clock timer (I keep discovering gems in gpc.pas!). But I'm getting identical results from the two timers: var time1, time2 : longCard; dummy, cpu1, cpu2 : integer; ... time1 := GetMicroSecondTime; dummy := 0; cpu1 := GetCPUTime(dummy); for i := 1 to big do j := randNorm(0.0, 1.0); dummy := 0; cpu2 := GetCPUTime(dummy); time2 := GetMicroSecondTime; writeln('Time for ', big:1, ' randNorms: ', ((time2-time1)*0.000001):7:2, ' seconds, ', (cpu2-cpu1):5, ' cpu seconds.'); ... A note in gpc.pas says that the argument to GetCPUTime can be null and is then ignored. When the computer is idle except for this program, I get: Time for 100000000 randNorms: 171.03 seconds, 171 cpu seconds. When I'm checking email, opening files, etc., I get: Time for 100000000 randNorms: 202.29 seconds, 202 cpu seconds. What am I doing wrong here - or is GetCPUTime not working? Toby

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OT: Losing mail [WAS Spam?]
by Neil Santos 02 Mar '04

02 Mar '04

Accidentally sent to Thorsten, instead of the list. Resending. By the way, why doesn't the list put the list's address in Reply-To? Thorsten Glaser wrote: >> I think CBFalconer's reply to my post was caught as spam by my ISP, > > > I actually got a mail with the word spam and nothing else, but > my spam filter is bmf and only bmf. So it must be not your ISP, > but rather something in between. Called up my ISP after my last message (something I think I should've done first); the tech support I got a hold of told me that whenever they detect a piece of mail as spam, they send me a notification. I'm not fully convinced of this, as the said tech support asked me what a spam filter is, but yeah... that's what I have to work with. I sure wish Mozilla SeaMonkey has provisions for verbose debug logs; or if it has, I found out and activated it sooner. But my Junk folder is empty. And I didn't tell SeaMonkey to automatically delete spam. -- - Neil Santos Freelance Programmer & Web Designer - - http://nsantos.f2o.org/ Free Software advocate - -----BEGIN GEEK CODE BLOCK----- Version: 3.12 GAT d+@ s+:+ a? C++++ UL*++++ P++ L++ E--- W+++(--) N-- !o !K w(++) !O M-- V? PS++ PE-- Y++ PGP+ t* 5-- X- R++ tv+ b++>+++ DI+++ D--- G e>+++++ h r++ y? ------END GEEK CODE BLOCK------ Please avoid sending me attachments encoded in secret formatting. See http://www.fsf.org/philosophy/no-word-attachments.html

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Gpc March 2004