newbie gdb help...

newbie gdb help...

[christopher j bottaro]

hello,
i just started using gdb yesterday.  i've read a lot of the manual and to my 
suprise, gdb is pretty easy to use.  i got pretty comfortable navagating thru 
the stack, the source, setting break and watch points, etc...

anyways, i have 2 questions that i couldn't find in the documentation:

1)  command to show you what line is about to be executed.  sometimes after 
many print commands, and many list commands, i lose track of where i am in 
the program's execution.

2)  when i resume execution of my program with the continue command, is there 
anyway to break it again from within gdb?  while the program is running 
(after issuing the continue command), gdb seems to ignore any input i try to 
tell it.

thanks for the help,
-- christopher

Re: newbie gdb help...

[Daniel Jacobowitz]

On Wed, Feb 05, 2003 at 02:38:10PM -0600, christopher j bottaro wrote:
> hello,
> i just started using gdb yesterday.  i've read a lot of the manual and to my 
> suprise, gdb is pretty easy to use.  i got pretty comfortable navagating thru 
> the stack, the source, setting break and watch points, etc...
> 
> anyways, i have 2 questions that i couldn't find in the documentation:
> 
> 1)  command to show you what line is about to be executed.  sometimes after 
> many print commands, and many list commands, i lose track of where i am in 
> the program's execution.

Try "f", for "frame".  It should show the current line.

> 2)  when i resume execution of my program with the continue command, is there 
> anyway to break it again from within gdb?  while the program is running 
> (after issuing the continue command), gdb seems to ignore any input i try to 
> tell it.

If you hit Control-C, GDB should stop the program.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer

Re: newbie gdb help...

[Tim Combs]

I use the "frame" command that lets me know where I am again.  An interrupt 
(cntrl-c ) command should stop GDB.  Are you using the command line?

Tim
On Wed, Feb 05, 2003 at 02:38:10PM -0600, christopher j bottaro wrote:
> hello,
> i just started using gdb yesterday.  i've read a lot of the manual and to my 
> suprise, gdb is pretty easy to use.  i got pretty comfortable navagating thru 
> the stack, the source, setting break and watch points, etc...
> 
> anyways, i have 2 questions that i couldn't find in the documentation:
> 
> 1)  command to show you what line is about to be executed.  sometimes after 
> many print commands, and many list commands, i lose track of where i am in 
> the program's execution.
> 
> 2)  when i resume execution of my program with the continue command, is there 
> anyway to break it again from within gdb?  while the program is running 
> (after issuing the continue command), gdb seems to ignore any input i try to 
> tell it.
> 
> thanks for the help,
> -- christopher