Re: [PATCH] -stack-info-frame/-stack-list-frames

Nick Roberts
2008-04-25T02:06:03Z

Daniel Jacobowitz writes:
> > Maybe Gdb could somehow identify the cases where the address isn't useful.
>
> If there are known cases where the address isn't useful, I (like
> Vladimir) do not understand why we should export it.

For the cases where it is useful?

> > I don't think the number need be that unbounded, it's not needed for each
> > frame, only those in which a varobj is created. But it appears that the
> > linked list of frames gets destroyed and recreated each time execution
> > occurs, in which case any id information is also lost (I was looking at
> > using an extra member in struct frame_info).
>
> Right, that's the whole problem. It has to last as long as the
> frame_id, not the frame_info.

It looks pretty intractable. It looks like the only place to store the
identifier is in the stack itself, perhap through some compile option,
-fframe-id, say. I don't know if compilers are allowed to create local
variables and I guess it's all getting too complicated.