https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95980
--- Comment #19 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Harald Anlauf <anl...@gcc.gnu.org>: https://gcc.gnu.org/g:76a8ff3948ad5a36ccae7305a2e9a7c2499418e5 commit r10-8526-g76a8ff3948ad5a36ccae7305a2e9a7c2499418e5 Author: Harald Anlauf <anl...@gmx.de> Date: Fri Jul 10 21:35:35 2020 +0200 PR fortran/95980 - ICE in get_unique_type_string, at fortran/class.c:485 In SELECT TYPE, the argument may be an incorrectly specified unlimited CLASS variable. Avoid NULL pointer dereferences for clean error recovery. gcc/fortran/ PR fortran/95980 * class.c (gfc_add_component_ref, gfc_build_class_symbol): Add checks for NULL pointer dereference. * primary.c (gfc_variable_attr): Likewise. * resolve.c (resolve_variable, resolve_assoc_var) (resolve_fl_var_and_proc, resolve_fl_variable_derived) (resolve_symbol): Likewise. (cherry picked from commit 70c884a4b82733027ac0e2620d09169b177080d7)