test availability of variables in context from user command

Christophe Demarey
2007-02-23T15:59:42Z

Hello,

I want to check the availability of a variable (var1 for instance) in
the context from an user command but I don't find any way to do this.
Here is a (dummy) example of what I want to do :

void func1(void)
{
int var2 = 2;
...
}

int main(int argc, char **argv)
{
int var1 = 1;

...
func1();
}

My gdb command:
define myfunc
if defined(var1)
$res = $var1
else
$res = $var2
end
...
end

If I break into main, res should be equals to 1, else res should be
equals to 2.

Is there a way to do this with gdb?

Thanks,
Christophe.