[Bug fortran/84000] New: [8 Regression] ICE in replace_loop_annotate, at tree-cfg.c:352

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84000

            Bug ID: 84000
           Summary: [8 Regression] ICE in replace_loop_annotate, at
                    tree-cfg.c:352
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Changed between 20171112 and 20171119 :


$ cat z1.f90
program p
   do concurrent (i = 1:2)
      do
      end do
   end do
end


$ gfortran-8-20171112 -c z1.f90
z1.f90:3:0:

       do

Warning: ignoring loop annotation


$ gfortran-8-20180121 -c z1.f90
during GIMPLE pass: cfg
z1.f90:1:0:

 program p

internal compiler error: in replace_loop_annotate, at tree-cfg.c:352
0xbd00bb replace_loop_annotate
        ../../gcc/tree-cfg.c:352
0xbd00bb execute_build_cfg
        ../../gcc/tree-cfg.c:418
0xbd00bb execute
        ../../gcc/tree-cfg.c:445