Re: use / handling of debug information for structures

[apgaylard]

> Hello everyone,
> 
> I am not sure to put my question in here but someone knowing the 
> internals of ddd might be able to answer it.
> 
> ddd is able to display instances of structure types and their components 
> .... it also displays the addresses/offsets, subtypes and of course their 
> values.
> 
> My question is, how does ddd retrieve this information?
> 
> I am trying to use the debug information gcc can add to executables to 
> reconstruct trees of structures. Using 'objdump --stabs' delivers enough 
> information to do this, but I will get strings and like to know if this 
> information is held in another form ... probably a ready to use linked 
> list of types and subtypes??

DDD works by sending commands to the inferior debugger (e.g. gdb), and
reading it's output.  To see what happens behind the scenes, try using 

    ddd --trace

Now, even when the mouse pointer passes over a piece of text in the
source window, you will see the commands issued and the results returned.


Andrew.

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