rb_copy_generic_ivar 104 object.c       	rb_copy_generic_ivar(dest, obj);
rb_copy_generic_ivar 283 ruby.h             if (FL_TEST(obj, FL_EXIVAR)) rb_copy_generic_ivar((VALUE)clone,(VALUE)obj);\
rb_copy_generic_ivar 287 ruby.h             if (FL_TEST(obj, FL_EXIVAR)) rb_copy_generic_ivar((VALUE)dup,(VALUE)obj);\