https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84653

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-03-01
                 CC|                            |dmalcolm at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Checked build of trunk segfaults here:

0x0000000000813619 in prep_operand (operand=<eq_expr 0x7ffff19edf28>) at
../../src/gcc/cp/call.c:5404
5404          if (CLASS_TYPE_P (TREE_TYPE (operand))

where TREE_TYPE (operand) is NULL.

Release builds of 7, 6 (and 5) handle it via the "confused by earlier errors,
bailing out" ICE.

Started with r208426

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