[Bug fortran/71883] ICE in identical_array_ref, at fortran/dependency.c:104

[gerhard.steinmetz.fortran@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71883

--- Comment #2 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---


Runtime behavior :


$ cat y1.f90
program p
   character(3), allocatable :: z(:,:)
   z(1:2,1:2) = 'abc'
   z(2,1) = z(1,2)
   z(2,1) = z(1,2)
end


$ gfortran-6 -g -O0 -Wall -fcheck=all -fno-frontend-optimize y1.f90
$ a.out
At line 3 of file y1.f90
Fortran runtime error: Index '1' of dimension 2 of array 'z' outside of
expected range (47021301956608:0)

Error termination. Backtrace:
#...