namespaces and gdb

namespaces and gdb

[Alexander Zhuckov]

Hi!

I use Linux, C++ and gdb 5.0.
Suppose I have a simple program:

namespace Foo {

    const char version[] = "0.1";

}

int main()
{
    return 0;
}

How I can eximine a value of the Foo::vesrion varibale?

-- 
Alexander Zhuckov   zuav@int.spb.ru   2:5030/518.50

Re: namespaces and gdb

[Daniel Berlin]

p 'Foo::version'
I'm trying to remember if i made it possible to just do p Foo::version, i
know i did it with templates.
If you don't want to have to quote it, try the latest CVS version of gdb,
and tell me if i fixed that (Bell Atlantic DSL is down right now, or else
i'd do a checkout myself).


On 28 Jun 2000, Alexander Zhuckov wrote:

> Hi!
> 
> I use Linux, C++ and gdb 5.0.
> Suppose I have a simple program:
> 
> namespace Foo {
> 
>     const char version[] = "0.1";
> 
> }
> 
> int main()
> {
>     return 0;
> }
> 
> How I can eximine a value of the Foo::vesrion varibale?
> 
> -- 
> Alexander Zhuckov   zuav@int.spb.ru   2:5030/518.50
> 

Re: namespaces and gdb

[Alexander Zhuckov]

Daniel Berlin <dan@cgsoftware.com> writes:
> p 'Foo::version'
> I'm trying to remember if i made it possible to just do p Foo::version, i
> know i did it with templates.
> If you don't want to have to quote it, try the latest CVS version of gdb,
> and tell me if i fixed that (Bell Atlantic DSL is down right now, or else
> i'd do a checkout myself).

Thank you very much! I tried it (p 'Foo::version') in gdb 5.0 and it works.
And now I have one more question: how I can examine a value of a variable
in anonymous namespace?
-- 
Alexander Zhuckov   zuav@int.spb.ru   2:5030/518.50

Re: namespaces and gdb

[Daniel Berlin]

On 30 Jun 2000, Alexander Zhuckov wrote:

> 
> Thank you very much! I tried it (p 'Foo::version') in gdb 5.0 and it works.
> And now I have one more question: how I can examine a value of a variable
> in anonymous namespace?
> 
You have to know how it's really being named. nm <your
executable>|c++filt|grep -i <the variable name>
See, the real problem is that namespaces don't generate any debug info,
and aren't symbols, so they don't really exist, so to speak.
The reason quoting it works is because it also matches it against the
demangled names.
--Dan
C++ Support Maintainer - GDB