[Bug tree-optimization/90978] A suspicious code in df-scan.c since r160348

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90978

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2019-06-25
           Assignee|unassigned at gcc dot gnu.org      |marxin at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #3)
> > Guess this is https://gcc.gnu.org/ml/gcc-patches/2010-06/msg00410.html but the
> > gcc_unreachable () calls weren't in the patch posted to gcc-patches.
> 
> It indeed seems like debugging session leftover. Given we had the check
> there for 9 years, perhaps it is enough evidence that path does not
> execute?

Yes, let me prepare a patch for it.