https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64091
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> --- We have this debug bind statement: # DEBUG b => NULL then we iterate on its SSA_OP_USEs, but USE_FROM_PTR is a debug_expr_decl (D#1), not a ssa_name.
