rb_special_const_p  214 ext/bigdecimal/bigdecimal.c     if (rb_special_const_p(v)) {
rb_special_const_p 2966 gc.c               if (rb_special_const_p(obj)) return FALSE; /* special const is not markable */
rb_special_const_p 9291 gc.c               if (!rb_special_const_p(obj)) {
rb_special_const_p 1996 include/ruby/ruby.h rb_special_const_p(VALUE obj)
rb_special_const_p 1619 marshal.c      	    if (rb_special_const_p(v) || RB_TYPE_P(v, T_OBJECT) || RB_TYPE_P(v, T_CLASS)) {
rb_special_const_p  330 object.c           if (rb_special_const_p(obj)) {
rb_special_const_p  398 object.c           if (rb_special_const_p(obj)) {