[Bug debug/48459] [4.6/4.7 Regression] avr: Assertion failure with -gdwarf-2

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48459

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu.org

--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> 2011-06-10 05:22:36 UTC ---
(In reply to comment #8)
> I agree. But this does not fully solve the problem either.
> INCOMING_RETURN_ADDR_RTX is being defined in dwarf2out.c to gcc_unreachable()
> :-(

Why is initial_return_save still being called?  My patch should prevent
debug_unwind_info from returning UI_DWARF2.