Who uses gdb + fortran?

Who uses gdb + fortran?

[Arjan van Dijk]

Hi,

Last week I had problems running gdb on a fortran program. I'm still
looking for someone who uses the combination of gdb + fortran.

Problem: how do I get the value of a variable?

According to the gdb manual the command

"print MAIN__::i"

should give the value of variable "i" in the main program. The result of
this command is just

"A parse error in expression, near ':i'.

Only when I use the "display" command instead of "print", and set the
display BEFORE I say "run" in gdb, then I get the values.

HELP!!!

Arjan


Arjan van Dijk
Institute for Marine and Atmospheric Research Utrecht
Faculty of Physics and Astronomy
Utrecht University
Princetonplein 5
NL - 3584 CC  Utrecht
The Netherlands

phone: +31 30 2532815
fax:   +31 30 2543163
e-mail: mailto:A.vanDijk@phys.uu.nl
homepage: http://www.phys.uu.nl/~vndijk

Re: Who uses gdb + fortran?

[Petr Sorfa]

Arjan van Dijk wrote:
> 
> Hi,
> 
> Last week I had problems running gdb on a fortran program. I'm still
> looking for someone who uses the combination of gdb + fortran.
> 
> Problem: how do I get the value of a variable?
> 
Hi Arjan,

I've written proper support for FORTRAN95 for GDB. We are currently
integrating it into top of tree, but you can download the patch, src and
RPMs for/as GDB 5.1.1 from:

http://sourceforge.net/project/showfiles.php?group_id=56720

Once installed and debugging, to print a variable, just type "print i".
Note that you may have to use DWARF debugging info in the exectutable to
get everything working fine. This depends on which compiler you are
using.

Release Candidate should be out soon with fixes and documentation.


Petr
> "print MAIN__::i"
> 
> should give the value of variable "i" in the main program. The result of
> this command is just
> 
> "A parse error in expression, near ':i'.
> 
> Only when I use the "display" command instead of "print", and set the
> display BEFORE I say "run" in gdb, then I get the values.
> 
> HELP!!!
> 
> Arjan
> 
> Arjan van Dijk
> Institute for Marine and Atmospheric Research Utrecht
> Faculty of Physics and Astronomy
> Utrecht University
> Princetonplein 5
> NL - 3584 CC  Utrecht
> The Netherlands
> 
> phone: +31 30 2532815
> fax:   +31 30 2543163
> e-mail: mailto:A.vanDijk@phys.uu.nl
> homepage: http://www.phys.uu.nl/~vndijk