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Re: [PATCH] Preliminary DW_OP_{implicit,stack}_value support (take 2)

Cary Coutant wrote:
And of course we can't have this going out in gcc 4.5 until the
dwarf4 spec is released.  Is there an eta on dwarf4?  If not,
perhaps this code should simply stay on a branch somewhere...
I'd say we have a precedent of using DWARF3 draft features years before
DWARF3 has been released (say DW_CFA_def_cfa_expression), but if you want to
be cautious this time...
Cary, can you find out if there is an approx. eta on DWAF4?  This year, in
2 years, within next decade?
If it would take too long, perhaps using DW_OP_GNU_stack_value (0xf2?)
would be the way to go.

We've closed the door for new issues, but are still working on extensions to support C++0x. I think the goal is to have it done before the end of the year, but we haven't discussed the timeline for a while now.

I think that, aside from the new C++0x features, everything else
that's new in DWARF 4 is stable enough to start using in gcc.

Fair enough. I won't hold up the patch from mainline based on the non-release of dwarf4 based on the understanding that these two particular codes are finalized.


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