[Bug fortran/88073] New: Internal compiler error compiling WHERE construct with -O or -O2

[xecej4 at outlook dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88073

            Bug ID: 88073
           Summary: Internal compiler error  compiling WHERE construct
                    with -O or -O2
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: xecej4 at outlook dot com
  Target Milestone: ---

Created attachment 45030
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45030&action=edit
Fortran source code which generates ICE when -O or -O2 is specified

Gfortran 7.3 and 8.1 experience an internal compiler error when compiling the
attached source file with either -O or -O2. The ICE does not occur if no
optimization flag is given.

$ gfortran -O2 -c tffu1.f90
tfu.f90:13:0:

    Where ( .Not. (l1v))

internal compiler error: Segmentation fault
libbacktrace could not find executable to open