rb_to_symbol     1725 include/ruby/ruby.h VALUE rb_to_symbol(VALUE name);
rb_to_symbol      507 struct.c       	VALUE mem = rb_to_symbol(argv[i]);
rb_to_symbol     3159 thread.c           return rb_hash_aref(locals, rb_to_symbol(key));
rb_to_symbol     3181 thread.c           return rb_hash_aset(locals, rb_to_symbol(id), val);
rb_to_symbol     2009 vm_method.c    						 rb_to_symbol(mid), priv);