[Bug fortran/64771] [4.9/5 Regression] ICE(segfault) when passing coarrays around; ICE in gfc_zero_size_array in arith.c:1637

[burnus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64771

--- Comment #5 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Created attachment 34567
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34567&action=edit
Draft patch