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GDB options [message #208912]

Wed, 30 January 2008 11:50

Eclipse User

Hello,
When Im debugging my C program, quite often gdb can't evaluate variables
values and displays "No symbol xx in current context". I would like to
ask you which are the "correct" gcc options for a accurate debugging.

Thanks
Tex.

Re: GDB options [message #209120 is a reply to message #208912]

Mon, 04 February 2008 12:38

Eclipse User

Originally posted by: jim.marshall.wbemsolutions.com

Tex-Twil wrote:
> Hello,
> When Im debugging my C program, quite often gdb can't evaluate variables
> values and displays "No symbol xx in current context". I would like to
> ask you which are the "correct" gcc options for a accurate debugging.
>
> Thanks
> Tex.
The only option you should need is the "-g" option. Are your sources
compiled with optimizations turned on (-Ox)? If so the variable may be
optimized away. Or are you possibly referring to a macro?

Re: GDB options [message #209153 is a reply to message #209120]

Tue, 05 February 2008 06:14

Eclipse User

Hi,
the -g param inproves the debugger behavior, thanks.

Tex
Jim Marshall wrote:
> Tex-Twil wrote:
>> Hello,
>> When Im debugging my C program, quite often gdb can't evaluate variables
>> values and displays "No symbol xx in current context". I would like to
>> ask you which are the "correct" gcc options for a accurate debugging.
>>
>> Thanks
>> Tex.
> The only option you should need is the "-g" option. Are your sources
> compiled with optimizations turned on (-Ox)? If so the variable may be
> optimized away. Or are you possibly referring to a macro?

Re: GDB options [message #209189 is a reply to message #209153]

Tue, 05 February 2008 07:33

Eclipse User

.... but I still have the "No symbol xx in current context" on some
variables. The strange thing is that those variables are correctly
displayed the the "Variables" debug window.

cheers,
Tex
Tex-Twil wrote:
> Hi,
> the -g param inproves the debugger behavior, thanks.
>
> Tex
> Jim Marshall wrote:
>> Tex-Twil wrote:
>>> Hello,
>>> When Im debugging my C program, quite often gdb can't evaluate variables
>>> values and displays "No symbol xx in current context". I would like to
>>> ask you which are the "correct" gcc options for a accurate debugging.
>>>
>>> Thanks
>>> Tex.
>> The only option you should need is the "-g" option. Are your sources
>> compiled with optimizations turned on (-Ox)? If so the variable may be
>> optimized away. Or are you possibly referring to a macro?

Re: GDB options [message #209203 is a reply to message #209189]

Tue, 05 February 2008 16:09

Eclipse User

Originally posted by: jim.marshall.wbemsolutions.com

Tex-Twil wrote:
> ... but I still have the "No symbol xx in current context" on some
> variables. The strange thing is that those variables are correctly
> displayed the the "Variables" debug window.
We would need more info on what you are referring to.
>
> cheers,
> Tex

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