Hi everybody,
I'm not sure where is the best place to post this message. If there is
a better location, please let me know so I can close this thread and
repost in the correct location. Recently there was a discussion about
how useless debugging is with FPC and especially inside the Lazarus
IDE.
You might want to take a look at the great book by Maltiff Salzmann:
The Art of Debugging. They provide a very nice overview about what gdb
can do. They also describe the gdb frontends DDD and Eclipse Of course
they only use C as a programming language.
They say that using a debugger has a
On Wed, Mar 11, 2009 at 11:14 AM, Michael Schnell mschn...@lumino.de wrote:
You might want to take a look at the great book by Maltiff Salzmann: The
Art of Debugging.
That's, I'll go to Amazon and see what it's about
They also describe the gdb frontends DDD and Eclipse Of course they
On Wed, 11 Mar 2009 10:24:53 +0200, Graeme Geldenhuys wrote:
I am willing to learn and help. Not having decent debugger support is
killing me - and I am clearly not alone, as the thread in the Lazarus
mailing list proves. The problem as far as I can see, is that the Free
Pascal project is
Graeme Geldenhuys schrieb:
That's the problem! GDB *doesn't* support all the language features
that Object Pascal offers, so some things cannot be debugged. This is
not a Lazarus issue, but a limitation of GDB with the Object Pascal
language. And I have heard the comments about trying to
Of course they only use C (no surprise) - no other programming
language exists. ;-)
In fact they do have a section about Java, Perl, Python, and Assembler
at the end of the book :).
-Michael
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On Wed, 11 Mar 2009, Florian Klaempfl wrote:
Graeme Geldenhuys schrieb:
That's the problem! GDB *doesn't* support all the language features
that Object Pascal offers, so some things cannot be debugged. This is
not a Lazarus issue, but a limitation of GDB with the Object Pascal
On Wed, Mar 11, 2009 at 11:41 AM, Florian Klaempfl
flor...@freepascal.org wrote:
Are you aware of the fact that Marc already started a debugger?
Now that you mention it, I vaguely remember something like that
mentioned. I think it was only for Windows, but I'll hunt it down and
see if we can
On Wednesday 11 March 2009 09:24:53 Graeme Geldenhuys wrote:
For me GDB with the MSEide frontend is better than the integrated debugger in
Delphi 7. It is almost impossible to develop something like MSEide+MSEgui
with writeln and logfile approach. Manytimes bugs are hard to find in event
Finally getting rid of GDB: This is VERY good news indeed :-)
it's been getting rid of GDB for some time already... but, imho it
should not be removed!
1) because GDB supports a lot of platforms, already. So porting a fpc
program to a new platform, will require a debugger. And the only
debugger
sorry! unfinished note:
2) gdb can be extended to support FPC syntax, if enougth information
is provided with GDB. And ofcause, some C-programmer might be required.
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On Wed, March 11, 2009 10:48, Michael Van Canneyt wrote:
On Wed, 11 Mar 2009, Florian Klaempfl wrote:
Graeme Geldenhuys schrieb:
That's the problem! GDB *doesn't* support all the language features
that Object Pascal offers, so some things cannot be debugged. This is
not a Lazarus issue,
dmitry boyarintsev schrieb:
Finally getting rid of GDB: This is VERY good news indeed :-)
it's been getting rid of GDB for some time already... but, imho it
should not be removed!
1) because GDB supports a lot of platforms, already. So porting a fpc
program to a new platform, will require
On Wed, 11 Mar 2009, Tomas Hajny wrote:
On Wed, March 11, 2009 10:48, Michael Van Canneyt wrote:
On Wed, 11 Mar 2009, Florian Klaempfl wrote:
Graeme Geldenhuys schrieb:
That's the problem! GDB *doesn't* support all the language features
that Object Pascal offers, so some things
GDB is ported for 10 years to windows and it's behaviour is still *very*
poor.
but at least, it works.
Is there any other debugger that can be used cross-platform, rather than gdb?
yes, there should be fpc based debugger, but gdb support should not be
removed, either.
dmitry boyarintsev wrote:
Finally getting rid of GDB: This is VERY good news indeed :-)
I quite agree !
it's been getting rid of GDB for some time already... but, imho it
should not be removed!
1) because GDB supports a lot of platforms, already. So porting a fpc
program to a new platform,
On Wednesday 11 March 2009 11:06:38 Florian Klaempfl wrote:
GDB is ported for 10 years to windows and it's behaviour is still
*very* poor.
MinGW gdb 6.8-3 works well for me.
http://sourceforge.net/project/showfiles.php?group_id=2435package_id=20507release_id=594520
Martin
dmitry boyarintsev wrote:
sorry! unfinished note:
2) gdb can be extended to support FPC syntax, if enougth information
is provided with GDB. And ofcause, some C-programmer might be required.
I'm not really sure about this. IIRC the internal design of gdb is
modeled after the STABS debug
Graeme Geldenhuys wrote on wo, 11 mrt 2009:
About GDB - this seems to be the debugger of choice for the Free
Pascal project.
It is the only debugger I know of that supports pretty much every
single platform out there. In fact, there are simply very few other
free (even as in beer)
Martin Schreiber wrote:
...
Martin, I was sure that you would jump in here :) Great !
For me GDB with the MSEide frontend is better than the integrated debugger in
Delphi 7.
And supposedly better than the Lazarus' one...
Could you take a look at the Wiki page mentioned and comment on if the
Finally getting rid of GDB: This is VERY good news indeed :-)
I quite agree !
it was not my words :)
Not really, there is low-level debugging support inside the OS. This is true
for Windows as well as for UNIX-like operating systems.
gdb is always based on system debugging API (DebugAPI in
like Visual Studio.
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Michael Schnell wrote:
Switch the stackframe if you want to examine variables of a caller.
Better than Delphi :). Can Lazarus do this, too ? Should it be extended
appropriately ?
Lazarus can.
Best regards,
Paul Ishenin.
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On Wednesday 11 March 2009 11:26:07 Florian Klaempfl wrote:
My main problem (if they really work) with all gdb gui frontends is that
they are dog slow compared with a good debugger like Visual Studio.
Agreed. MSEide has a button to disable the watches for fast stepping.
On a modern computer
On Wednesday 11 March 2009 11:28:27 Graeme Geldenhuys wrote:
Well writing a new compiler is just such a big task and it didn't
prevent Florian from starting FPC. Having a 100% working debugger (no
matter if it takes a while to get there) is still much better in the
long run - for the
On Wednesday 11 March 2009 11:23:00 Michael Schnell wrote:
GDB can switch the stackframe which Delphi 7 cant.
This allows for taking a look at the local variable of a ancestor
procedure ?
Yes, don't forget to compile with -O-.
[...]
There are some issues with debuginfo of dynamic arrays
On Wed, Mar 11, 2009 at 12:20 PM, Jonas Maebe jonas.ma...@elis.ugent.be wrote:
GDB is designed for any language it has maintainers for (just like FPC is
designed for all platforms that have active maintainers, and languishes or
Probably true, but it's leans a lot more to C/C++ support than any
On Wed, Mar 11, 2009 at 12:48 PM, Martin Schreiber fp...@bluewin.ch wrote:
I think it would be better to extend gdb for better FPC support.
I don't see myself relearning C language again! I left C/C++ for a reason.
Regards,
- Graeme -
___
fpGUI
And of course Also remember that it would be dangerous to call the
function from the debugger (outside the normal flow of the
application). This can modify the state of the application (a function
may change other objects) cannot be solved by any debugger (even if
you'd take a complete
Everybody keeps hammering on this point. Delphi has supported property
access methods since forever and I have not heard of a single Delphi
developer complaining about the possible side effects. For me the
pros far outweigh the cons!
I suppose thy to check if a read function is pure. I seem
I don't see myself relearning C language again! I left C/C++ for a reason.
Where is the problem with C ? Of course it's by far less nice than
Object-Pascal, but I don't suppose with doing a Debugger the Object
feature does not help that much, and for low-level stuff C seems quite
O/H Dave Parsons έγραψε:
On Wed, 11 Mar 2009 10:24:53 +0200, Graeme Geldenhuys wrote:
I am willing to learn and help. Not having decent debugger support is
killing me - and I am clearly not alone, as the thread in the Lazarus
mailing list proves. The problem as far as I can see, is that the
Graeme Geldenhuys wrote on wo, 11 mrt 2009:
On Wed, Mar 11, 2009 at 12:20 PM, Jonas Maebe
jonas.ma...@elis.ugent.be wrote:
GDB is designed for any language it has maintainers for (just like FPC is
designed for all platforms that have active maintainers, and languishes or
Probably true,
Marc Weustink wrote on wo, 11 mrt 2009:
I'm not really sure about this. IIRC the internal design of gdb is
modeled after the STABS debug format. This means that even for DWARF,
it internally is translated to STABS, meaning that not all contstucts
possible in DWARF are supported. Given this I
Jonas Maebe wrote:
Just like FPC development, GDB development does not stand still. The
above no longer is true (full, or nearly full, DWARF3 support is in
the GDB Archer branch, and I have already fixed bugs in FPC's DWARF3
information so that e.g. dynamic arrays work perfectly in that
Graeme Geldenhuys wrote:
Like I said, I am not very knowledgeable with debugger internals, but
I am willing to learn and help. Not having decent debugger support is
killing me - and I am clearly not alone, as the thread in the Lazarus
The problem is not so much the debugging itself. That is
I agree. The current ways to debug FPC/Lazarus programs are not up to
the standards even compared to 10-15 years ago Delphi debugging.
Most developers does not want to start digging the underlying
RTL/Component, etc. source codes to figure out what they should enter
into the watch window
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