rb_set_safe_level 6176 ext/tk/tcltklib.c     rb_set_safe_level(q->safe_level);
rb_set_safe_level 6658 ext/tk/tcltklib.c     rb_set_safe_level(q->safe_level);
rb_set_safe_level 8064 ext/tk/tcltklib.c     rb_set_safe_level(q->safe_level);
rb_set_safe_level  391 include/ruby/ruby.h void rb_set_safe_level(int);
rb_set_safe_level 1407 ruby.c             rb_set_safe_level(opt->safe_level);