On 20/05/2024 22:34, David Blaikie via Dwarf-discuss wrote:
On Thu, May 16, 2024 at 1:05 PM Martin via Dwarf-discuss
<dwarf-discuss@lists.dwarfstd.org
<mailto:dwarf-discuss@lists.dwarfstd.org>> wrote:
On 16/05/2024 21:58, Martin via Dwarf-discuss wrote:
>
> If there is code (with debug info) that uses a class/struct that is
> defined in a unit WITHOUT debug info (or at least a base class is
> in such a
> unit), then IMHO the debugger should be able to show the entire
> structure, including fields/methods from that unit without debug
info.
>
> For that, the declaration of that class can be repeated. But if
the user
> then wants to call (from the debugger) a function on that (base-)
class,
> then it needs the DW_AT_low_pc?
Oh, perhaps the easier thing is to address this question directly.
I believe this is done with existing producers and consumers by having
the DW_AT_linkage_name attached to the function declaration. Hmm, just
tried with GDB and even if I omit the linkage name, it's able to call
the function - I guess by using the DWARF it has, and searching the
mangled names of the symbols, it can demangle them and match them up (or
create a mangled name from the DWARF to match that up - though that
might fail in some cases where the DWARF doesn't have enough info to
produce the matching mangled name) and it knows the return type and can
decode the bits to render them correctly.
So, there's a couple of options at least.
Many thanks.
That gives indeed a couple of working options.
--
Dwarf-discuss mailing list
Dwarf-discuss@lists.dwarfstd.org
https://lists.dwarfstd.org/mailman/listinfo/dwarf-discuss
