https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86110
--- Comment #1 from G. Steinmetz <gs...@t-online.de> --- Detected : $ cat z3.f90 program p character(:), allocatable :: x, y x = 'abc' y = [x] end $ gfortran-9-20180610 -c z3.f90 z3.f90:4:3: y = [x] 1 Error: Incompatible ranks 0 and 1 in assignment at (1)