Method#to_proc

static VALUE
method_to_proc(VALUE method)
{
    VALUE procval;
    rb_proc_t *proc;

    /*
     * class Method
     *   def to_proc
     *     lambda{|*args|
     *       self.call(*args)
     *     }
     *   end
     * end
     */
    procval = rb_block_call(rb_mRubyVMFrozenCore, idLambda, 0, 0, bmcall, method);
    GetProcPtr(procval, proc);
    proc->header.is_from_method = 1;
    return procval;
}