Re: [fpc-pascal] Does ReallocMem(p,0) always set p to nil?
Vincent Snijders schreef: Hi, Consider this piece of code: var p: pointer; begin p := getmem(100); reallocmem(p,0); p := nil; end. Do I need to do p:=nil, if I want to be sure that p contains nil? I saw that both system.SysReAllocMem and cmem.CReAllocMem do this, is size=0, but the docs at http://lazarus-ccr.sourceforge.net/docs/rtl/system/reallocmem.html don't mention this, so I don't know if I can be trust that is the case for always for all memory managers. Tough question apparently. Let's try to word it differently. After reallocmem(p,0) I observed that p is always nil. Is this an implementation detail (subject to change) or part of the specification of reallocmem? Vincent ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] set output directory for resources
Peter Vreman schreef:
Vincent Snijders schreef:
Hi,
If I compile a unit which contains {$R wincemenures.res} a file named
wincemenures.or is created in the source directory, even if I have set
-FU or -FE. What parameter do I need to pass to the compile to move the
.or file to the unit output directory?
Nobody answered, so I decided to dive into the compiler source myself
and I think always the source directory is used.
Attached patch changes this to the output directory of the currently
compiled module. Is this ok?
ok
Committed in r7276. Can it be merged to the fixes branch?
Vincent
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Re: [fpc-pascal] Does ReallocMem(p,0) always set p to nil?
On Mon, 7 May 2007, Vincent Snijders wrote: > Vincent Snijders schreef: > > Hi, > > > > Consider this piece of code: > > > > var > > p: pointer; > > begin > > p := getmem(100); > > reallocmem(p,0); > > p := nil; > > end. > > > > Do I need to do p:=nil, if I want to be sure that p contains nil? > > > > I saw that both system.SysReAllocMem and cmem.CReAllocMem do this, is > > size=0, but the docs at > > http://lazarus-ccr.sourceforge.net/docs/rtl/system/reallocmem.html don't > > mention this, so I don't know if I can be trust that is the case for always > > for all memory managers. > > Tough question apparently. Let's try to word it differently. > > After reallocmem(p,0) I observed that p is always nil. Is this an > implementation detail (subject to change) or part of the specification of > reallocmem? This is part of the specification. Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] libsndfile library
The real question is "How to play a sound file on Linux in the same way
I can do it on windows?".
this is my experience:
On Windows I do:
uses mmsystem
...
sndPlaySound('filename.wav',0);
...
and it works gracefully.
On Linux I found only the sndfile unit (packages\extra\sndfile\).
This require the presence of sndlife library on the distribution.
In my PC I have Ubuntu 6.06 with libsndfile installed (dynamic library
only):
/usr/lib/libsndfile.so.1.0.12
/usr/lib/libsndfile.so.1
So, I try to compile the example sfplay.pp, and after some corrections
it compiles but after that the linker stops with the infamous message:
/usr/bin/ld: cannot find -lsndfile
sound.pas(34,1) Error: Error while linking
(note: the -Fl statements in fpc.cfg are tuned on /usr/ and /usr/lib/ so
the real problem is that I don't have the static library)
There is a chance to have my program linked on a system where I only
have the Dynamic Libray?
thanks
tiziano
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Re: [fpc-pascal] Does ReallocMem(p,0) always set p to nil?
Michael Van Canneyt schreef: On Mon, 7 May 2007, Vincent Snijders wrote: Vincent Snijders schreef: Hi, Consider this piece of code: var p: pointer; begin p := getmem(100); reallocmem(p,0); p := nil; end. Do I need to do p:=nil, if I want to be sure that p contains nil? I saw that both system.SysReAllocMem and cmem.CReAllocMem do this, is size=0, but the docs at http://lazarus-ccr.sourceforge.net/docs/rtl/system/reallocmem.html don't mention this, so I don't know if I can be trust that is the case for always for all memory managers. Tough question apparently. Let's try to word it differently. After reallocmem(p,0) I observed that p is always nil. Is this an implementation detail (subject to change) or part of the specification of reallocmem? This is part of the specification. Thanks. Can you add this to the documentation? Vincent ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] libsndfile library
> On Linux I found only the sndfile unit (packages\extra\sndfile\). > > This require the presence of sndlife library on the distribution. > > In my PC I have Ubuntu 6.06 with libsndfile installed (dynamic library > only): > > /usr/lib/libsndfile.so.1.0.12 > /usr/lib/libsndfile.so.1 Your Linux system is not properly configured for libsndfile development. You miss the symlink from libsndfile.so -> libsndfile.so.1.0.12 > /usr/bin/ld: cannot find -lsndfile > sound.pas(34,1) Error: Error while linking > > (note: the -Fl statements in fpc.cfg are tuned on /usr/ and /usr/lib/ so > the real problem is that I don't have the static library) > > There is a chance to have my program linked on a system where I only > have the Dynamic Libray? A -lxxx searches for libxxx.so only, not for variants. Create symlinks if necessary or try to install packages that might create symlinks (like -dev packages on RedHat) ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] set output directory for resources
On 5/7/07, Vincent Snijders <[EMAIL PROTECTED]> wrote: Committed in r7276. Can it be merged to the fixes branch? That would be great... -- Graeme Geldenhuys There's no place like S34° 03.168' E018° 49.342' ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] libsndfile library
Marco van de Voort wrote: On Linux I found only the sndfile unit (packages\extra\sndfile\). This require the presence of sndlife library on the distribution. In my PC I have Ubuntu 6.06 with libsndfile installed (dynamic library only): /usr/lib/libsndfile.so.1.0.12 /usr/lib/libsndfile.so.1 Your Linux system is not properly configured for libsndfile development. neither for other kind of develpment libraries (ncurses, sqlite, etc, etc) indeed. Each time I try something that needs a link to a library I have to spend my weekends trying to fild what is missing... :-( You miss the symlink from libsndfile.so -> libsndfile.so.1.0.12 /usr/bin/ld: cannot find -lsndfile sound.pas(34,1) Error: Error while linking (note: the -Fl statements in fpc.cfg are tuned on /usr/ and /usr/lib/ so the real problem is that I don't have the static library) There is a chance to have my program linked on a system where I only have the Dynamic Libray? A -lxxx searches for libxxx.so only, not for variants. Create symlinks if necessary or try to install packages that might create symlinks (like -dev packages on RedHat) Ok, I'll try that, thanks. But the same problem could happen in other PCs where my program could be deployed... So I turn back to the inital question: there is a more affordable way to play a sound file on a Linux Machine? thanks tiziano ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] LongWord
I have written a small demo program that gives a runetime error when it
runs.
Is it the compiler or is it me?
Regards carsten
The program
program word32test;
{$RANGECHECKS ON}
{$OVERFLOWCHECKS ON}
{$S+ STACK CHECKING ON}
{$SMARTLINK ON}
{$TYPEINFO ON}
{$LONGSTRINGS OFF}
var
a,b,c:longWord;
Begin
a:=10;
b:=5;
writeLn('a=',a,' b=',b);
c:= a - b;
writeLn('Resultat : ',c);
End.
--- The program output --
$ ./word32test
a=10 b=5
Runtime error 215 at $81CC
$81CC main, line 17 of word32test.pp
$80F4
The compiler output
./makearm.shFpc/Pas/Linux/Test/Word32 #
+-+
| CFG file ver. 1.00 d. 19/9-2006 |
+-+
+-+
| Cross compiling for ARM 9 Linux |
+-+
+--+
| Standard lib |
+--+
Hint: End of reading config file /etc/fpc.cfg
Free Pascal Compiler version 2.0.4 [2006/08/29] for arm
Copyright (c) 1993-2006 by Florian Klaempfl
Target OS: Linux for ARM
Compiling word32test.pp
Assembling word32test
Assembling with smartlinking word32test
/Fpc/ArmBin/ar: creating libpword32test.a
Linking word32test
19 Lines compiled, 0.5 sec
Med venlig hilsen
Carsten Bager
BEAS A/S
Brørupvænget 10
DK-7650 Bøvlingbjerg
Tlf. : +45 9788 5222 Fax : +45 9788 5434
www.beas.dk
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Re: [fpc-pascal] LongWord
On 7 mei 2007, at 14:15, Carsten Bager wrote: I have written a small demo program that gives a runetime error when it runs. Is it the compiler or is it me? See http://www.freepascal.org/mantis/view.php?id=8321 for a long discussion on this topic. Jonas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] LongWord
Op Mon, 7 May 2007, schreef Jonas Maebe: > > On 7 mei 2007, at 14:15, Carsten Bager wrote: > > > I have written a small demo program that gives a runetime error when it > > runs. > > Is it the compiler or is it me? > > See http://www.freepascal.org/mantis/view.php?id=8321 for a long discussion on > this topic. 10 - 5 = 5 This is a different issue; 10-5 should not overflow regardless of the type that is used for the calculation. Daniël___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] LongWord
> > I have written a small demo program that gives a runetime error > See http://www.freepascal.org/mantis/view.php?id=8321 for a long > discussion on this topic. I do not think that the discussion covers my case, all my numbers are positive and the result is positive. I have just tried the example with the 386 linux compiler it returns 5 as one would expect. --- ./make386.shFpc/Pas/Linux/Test/Word32 # +-+ | CFG file ver. 1.00 d. 19/9-2006 | +-+ +--+ | Compiling for I386 Linux | +--+ Hint: End of reading config file /etc/fpc.cfg Free Pascal Compiler version 2.0.4 [2006/08/20] for i386 Copyright (c) 1993-2006 by Florian Klaempfl Target OS: Linux for i386 Compiling word32test.pp Linking word32test 19 Lines compiled, 0.4 sec - ./word32testFpc/Pas/Linux/Test/Word32 # a=10 b=5 Resultat : 5 Med venlig hilsen Carsten Bager BEAS A/S Brørupvænget 10 DK-7650 Bøvlingbjerg Tlf. : +45 9788 5222 Fax : +45 9788 5434 www.beas.dk ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] LongWord
Jonas,
On 7 mei 2007, at 14:15, Carsten Bager wrote:
I have written a small demo program that gives a runetime error when it
runs.
Is it the compiler or is it me?
See http://www.freepascal.org/mantis/view.php?id=8321 for a long
discussion on this topic.
I think I have hit a similar case with the following code:
{$mode objfpc}{$H+}
program test; { FPC 2.0.4}
var
w: Word;
begin
w:= ;
if lo(w) <> lo(w + (5 - 5)) then
writeln('This is a little bit unexpected');
end.
What would you suggest as a "workaround"? Using the mod operator?
Regards, Bernd.
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Re: [fpc-pascal] libsndfile library
> > A -lxxx searches for libxxx.so only, not for variants. Create symlinks if > > necessary or try to install packages that might create symlinks (like > > -dev packages on RedHat) Ubuntu also has x-dev packages. apt-get install lbsndfile1-dev should fix your problem without need to tinker. > > Ok, I'll try that, thanks. But the same problem could happen in other > PCs where my program could be deployed... > > So I turn back to the inital question: there is a more affordable way to > play a sound file on a Linux Machine? > SDL. This library, not counting the graphics part, is ingenious IMHO. bartek ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] libsndfile library
> > > >> /usr/lib/libsndfile.so.1.0.12 > >> /usr/lib/libsndfile.so.1 > > > > Your Linux system is not properly configured for libsndfile development. > neither for other kind of develpment libraries (ncurses, sqlite, etc, > etc) indeed. > Each time I try something that needs a link to a library I have to spend > my weekends trying to fild what is missing... :-( How this is handled is distro specific. I suggest you read the docs for your distribution to see how it is done. > Ok, I'll try that, thanks. But the same problem could happen in other > PCs where my program could be deployed... Yes and no. No: It will probably add a dependancy to libsndfile.so.1 (not .so or .so.1.0.12). And that is installed. Yes: the library must be present, and under that name, and there is no guarantee. But that at least will be ok for Ubuntu. The only way around it is to enter the complex package building and add a dependancy on the file, a system that varies from distro to distro, unix variant to unix variant (iow, to package your app as a package for each (family of) distribution(s)). > So I turn back to the inital question: there is a more affordable way to > play a sound file on a Linux Machine? No. This is a general library and packaging problematic. No library is 100% guaranteed on Linux, even glibc can be replaced by some embedded variant. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] Widestrings length and character iteration
Hi, Are there any rtl functions to compute the length (in characters) of a widestring and to iterate over its characters? In my system (Mac OS X/fpc 2.1.3), a widestring is implemented as a UTF-8 encoded string, as I found out. Thanks ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Widestrings length and character iteration
Op Mon, 7 May 2007, schreef Christos Chryssochoidis: > Hi, > > Are there any rtl functions to compute the length (in characters) of a > widestring and to iterate over its characters? If you treat it as UCS-2: length(widestring_variable) > In my system (Mac OS X/fpc 2.1.3), a widestring is implemented as a UTF-8 > encoded string, as I found out. Not possible, a widestring is UCS-2/UTF-16. Daniël___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] LongWord
On 7 mei 2007, at 15:14, Bernd Mueller wrote:
See http://www.freepascal.org/mantis/view.php?id=8321 for a long
discussion on this topic.
I think I have hit a similar case with the following code:
{$mode objfpc}{$H+}
program test; { FPC 2.0.4}
var
w: Word;
begin
w:= ;
if lo(w) <> lo(w + (5 - 5)) then
writeln('This is a little bit unexpected');
end.
What would you suggest as a "workaround"? Using the mod operator?
Yes, or using byte()/word(), or typecasting the result of the
calculation. The result of lo/hi depends on the type of the expression.
Jonas
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Re: [fpc-pascal] libsndfile library
Am Montag, den 07.05.2007, 10:01 +0200 schrieb Tiziano_mk: > Marco van de Voort wrote: > >> On Linux I found only the sndfile unit (packages\extra\sndfile\). > >> > >> This require the presence of sndlife library on the distribution. > >> > >> In my PC I have Ubuntu 6.06 with libsndfile installed (dynamic library > >> only): > > > >> /usr/lib/libsndfile.so.1.0.12 > >> /usr/lib/libsndfile.so.1 > > > > Your Linux system is not properly configured for libsndfile development. > neither for other kind of develpment libraries (ncurses, sqlite, etc, > etc) indeed. > Each time I try something that needs a link to a library I have to spend > my weekends trying to fild what is missing... :-( I'm not using Linux, but doesn't ldconfig exist there? On FreeBSD you can do: $ ldconfig -r|grep sndfile 463:-lsndfile.1 => /usr/local/lib/libsndfile.so.1 So you know what's there. AFAIR in the link.sh script in the build directory after fpc failed there are hints on where fpc is searching. After asking ldconfig after what it found you could look further: $ ls -l /usr/local/lib/libsndfile* -rw-r--r-- 1 root wheel 425514 26 Mai 2005 /usr/local/lib/libsndfile.a lrwxr-xr-x 1 root wheel 15 26 Mai 2005 /usr/local/lib/libsndfile.so -> libsndfile.so.1 -rwxr-xr-x 1 root wheel 359904 26 Mai 2005 /usr/local/lib/libsndfile.so.1 (sorry for long lines) If you set the link a short ldconfig -R rescans the library dirs and it should work. > > > > You miss the symlink from libsndfile.so -> libsndfile.so.1.0.12 > > > >> /usr/bin/ld: cannot find -lsndfile > >> sound.pas(34,1) Error: Error while linking > >> > >> (note: the -Fl statements in fpc.cfg are tuned on /usr/ and /usr/lib/ so > >> the real problem is that I don't have the static library) > >> > >> There is a chance to have my program linked on a system where I only > >> have the Dynamic Libray? > > > > A -lxxx searches for libxxx.so only, not for variants. Create symlinks if > > necessary or try to install packages that might create symlinks (like -dev > > packages on RedHat) > > Ok, I'll try that, thanks. But the same problem could happen in other > PCs where my program could be deployed... Try "man ldconfig" and read more about the linux specific switches ... Hope it helps, Marc ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
RV: [fpc-pascal] Program exited with code 01
Any suggestion? -Mensaje original- De: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] En nombre de josepascual (almudi) Enviado el: viernes, 04 de mayo de 2007 10:28 Para: 'FPC-Pascal users discussions' Asunto: [fpc-pascal] Program exited with code 01 Hi Everyone, I have compiled hello_eabi_arm (hello world!) with ppcrossarm and -GfSOFT option. I can run a hello world program with no problem (ldd say me there is not libraries needed) but if I use dl.pp I received next error (write below), ldd say libdl and libc.so.6 are needed. any suggestion? how can I discover what file or directory is missing for program, = >$ ./hello_eabi_arm -bash: ./ hello_eabi_arm: No such file or directory >$ gdb hello_eabi_arm GNU gdb 6.5-debian Copyright (C) 2006 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "arm-linux-gnueabi"...Using host libthread_db library "/lib/libthread_db.so.1". (gdb) run Starting program: /tmp/hello_eabi_arm /bin/bash: /tmp/hello_eabi_arm: No such file or directory /bin/bash: /tmp/hello_eabi_arm: Success Program exited with code 01. warning: Unable to find dynamic linker breakpoint function. GDB will be unable to debug shared library initializers and track explicitly loaded dynamic code. You can't do that without a process to debug. (gdb) = thanks, regards Jose Pascual ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal __ Informacisn de NOD32, revisisn 2238 (20070503) __ Este mensaje ha sido analizado con NOD32 antivirus system http://www.nod32.com ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: RV: [fpc-pascal] Program exited with code 01
On 07/05/07, josepascual (almudi) <[EMAIL PROTECTED]> wrote: >$ ./hello_eabi_arm -bash: ./ hello_eabi_arm: No such file or directory ... ... ... (gdb) run Starting program: /tmp/hello_eabi_arm /bin/bash: /tmp/hello_eabi_arm: No such file or directory so the file doesn't exist. did it not compile? if you want to link to these libraries, you need to make sure that they are somewhere in a lib directory under your toolchain. usually your cross-ld will be configured to look for the library in the right place, but otherwise you might have to give the option to fpc to look in the right dir for those libs. henry ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] Class Memory Table Size
Hi, In this page http://www.freepascal.org/docs-html/prog/progsu139.html#x189-1950008.2.13 in the VMT +0 is the "Size of object type data" and the same number in the negative is stored at +4. How important is it that this number is not changed after the object is created? I want to store a number especially at +0. What is stored after that does not matter. The reason for this is, I want to trick gtk into thinking that a TObject is really a GObject. This is where the TypeID for GType's are stored. I know this won't work for most GObject's, but I am only implementing this for a GInterface which is looked up by the TypeID, so that is all I need. I've tested this and it is working. But what horrible things can happen? Thanks, Andrew Haines ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Class Memory Table Size
Op Tue, 8 May 2007, schreef Andrew Haines: > Hi, > > In this page > http://www.freepascal.org/docs-html/prog/progsu139.html#x189-1950008.2.13 > in the VMT +0 is the "Size of object type data" and the same number in > the negative is stored at +4. How important is it that this number is > not changed after the object is created? I want to store a number > especially at +0. What is stored after that does not matter. These fields are used by several RTL routines that operate on classes, which will no longer function correctly. For details we need to search the source code. > The reason for this is, I want to trick gtk into thinking that a TObject > is really a GObject. This is where the TypeID for GType's are stored. I > know this won't work for most GObject's, but I am only implementing this > for a GInterface which is looked up by the TypeID, so that is all I need. > > I've tested this and it is working. But what horrible things can happen? I think it is much better to use objects for this rather than classes. A construction like this: type gobject=object gobject_typeid:...; end; gobject_child=object(gobject) constructor init; destructor done;virtual; end; ... will exactly to what you want: the gobject_typeid is at offset 0 while the size and vmt index are stored after that. Daniël___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] Re:LongWord
> 10 - 5 = 5
> This is a different issue; 10-5 should not overflow regardless of the
> type that is used for the calculation.
> Daniël
I tried to compile and run with the
2.1.3 compiler (arm and i386)
Both executables did run without runtime errors but the compilers gave a
warning.
The same program compiled with a Delphi7 Compiler does not give any
warnings or errors.
Carsten
--- Arm Compiler output --
linux-bh36:/Fpc/Pas/Linux/Test/Word32 # ./makearm.sh
+-+
| CFG file ver. 1.00 d. 19/9-2006 |
+-+
+-+
| Cross compiling for ARM 9 Linux |
+-+
+--+
| Standard lib |
+--+
Hint: End of reading config file /etc/fpc.cfg
Free Pascal Compiler version 2.1.3 [2007/03/22] for arm
Copyright (c) 1993-2007 by Florian Klaempfl
Target OS: Linux for ARM
Compiling word32test.pp
word32test.pp(17,12) Warning: Type size mismatch, possible loss of data /
range check error
Assembling word32test
Assembling with smartlinking word32test
/Fpc/ArmBin/ar: creating libpword32test.a
Linking word32test
19 lines compiled, 1.1 sec
1 warning(s) issued
2 hint(s) issued
I386 Compiler Output
linux-bh36:/Fpc/Pas/Linux/Test/Word32 # ./make386.sh
+-+
| CFG file ver. 1.00 d. 19/9-2006 |
+-+
+--+
| Compiling for I386 Linux |
+--+
Hint: End of reading config file /etc/fpc.cfg
Free Pascal Compiler version 2.1.3 [2007/03/22] for i386
Copyright (c) 1993-2007 by Florian Klaempfl
Target OS: Linux for i386
Compiling word32test.pp
word32test.pp(17,12) Warning: Type size mismatch, possible loss of data /
range check error
Linking word32test
19 lines compiled, 0.3 sec
1 warning(s) issued
2 hint(s) issued
- The Program -
program word32test;
{$RANGECHECKS ON}
{$OVERFLOWCHECKS ON}
{$S+ STACK CHECKING ON}
{$TYPEINFO ON}
{$LONGSTRINGS OFF}
var
a,b,c:longWord;
Begin
a:=10;
b:=5;
writeLn('a=',a,' b=',b);
c:= a - b;
writeLn('Resultat : ',c);
End.
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