[Bug fortran/90238] Bogus warning from -Warray-bounds, triggered by zero-length character literal

[townsend at astro dot wisc.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90238

--- Comment #1 from Rich Townsend <townsend at astro dot wisc.edu> ---
An even-simpler demo:

--
program test_str_2

  write(*,*) ''

end program test_str_2
--

Compile with -O2 -Warray-bounds gives

test_str_2.f90:3:0:

   write(*,*) ''

Warning: array subscript 1 is above array bounds of 'character(kind=1)[1:0]'
[-Warray-bounds]

cheers,

Rich