https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107002

David Malcolm <dmalcolm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2022-09-22
             Status|UNCONFIRMED                 |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |dmalcolm at gcc dot 
gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Probably introduced by r13-2386-gbedfca647a9e9c1a, which added
-Wxor-used-as-pow.

Failing assertion in column_range's ctor:

2233      column_range (int start_, int finish_) : start (start_), finish
(finish_)
2234      {
2235        /* We must have either a range, or an insertion.  */
2236        gcc_assert (start <= finish || finish == start - 1);
2237      }

where:

(gdb) p start_
$1 = 5
(gdb) p finish_
$2 = 0

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