[fpc-devel] difference between stabs and dwarf for "var param"

[Pierre Free Pascal]

  I even had to revert a patch inside GDB about this issue,
see:

http://sourceware.org/ml/gdb-patches/2010-11/msg00084.html
after my accepted patch:
http://sourceware.org/ml/gdb-patches/2010-05/msg00258.html

It seems that 
DW_AT_variable_parameter
is an informational attribute only, and as such should only be
used for display, but the fact that it is a parameter
that is passed by reference should still be mentioned.

  If we issue both, then we should probably,
inside the pascal expression reader, hide the reference,
so that the output is the same as for stabs.

Pierre Muller

as pascal language maintainer of GDB.

> -----Message d'origine-----
> De : fpc-devel-bounces at lists.freepascal.org [mailto:fpc-devel-
> bounces at lists.freepascal.org] De la part de Jonas Maebe
> Envoyé : jeudi 9 décembre 2010 17:59
> À : FPC developers' list
> Objet : Re: [fpc-devel] difference between stabs and dwarf for "var
> param"
> 
> 
> On 09 Dec 2010, at 17:40, Martin wrote:
> 
> > I understand that a var param is passed by ref (internally), but if
> Stabs can tell the debugger, to hide this, then shouldn't dwarf be able
> to do that too?
> > Or is dwarf showing the internal pointer intentionally?
> 
> GDB does not yet support the concept of "var" parameters in DWARF, so
> we currently encode them as C++-style reference parameters.
> 
> 
> Jonas_______________________________________________
> fpc-devel maillist  -  fpc-devel at lists.freepascal.org
> http://lists.freepascal.org/mailman/listinfo/fpc-devel