Re: adding namespace support to GDB

Daniel Jacobowitz
2002-08-23T18:47:03Z

On Fri, Aug 23, 2002 at 11:41:06AM -0700, David Carlton wrote:
> In article <3D6677D3.6E84743C@caldera.com>, Petr Sorfa
> <petrs@caldera.com> writes:
>
> > Well to help things along I will be submitting a DWARF patch that
> > will supported imported declarations which are essential for FORTRAN
> > modules and C++ namespaces.
>
> Great, I look forward to reading it.
>
> > This is essential for the "using" commands in either language (of
> > course the compiler needs to generate the correct DWARF
> > ;o)).
>
> Yes, well, there is always that. Certainly it seems like a solution
> for C++ will initially have to get recreate namespace info from
> DW_AT_MIPS_linkage_name, and there's no way that we'll be able to
> allow users to use symbol names as if all the appropriate using
> directives were in effect, since that information simply isn't in the
> debug information that GCC is currently producing. (Though that's not
> the end of the world: we should be able to do name lookup using C++'s
> name resolution rules based on the enclosing function and its
> arguments, presumably.)

C++ certainly does _not_ need to reconstruct from
DW_AT_MIPS_linkage_name. Everything we need should be there in
DW_TAG_namespace and DW_TAG_structure/class markers; I have patches to
use this information, with the caveats I noted in my other message.

I am gradually working on removing all uses of the physname from the
C++ debugging code. It's a hack (and a space waste!).

--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer