use 5.010;
use strict;
use warnings;
 
sub proxy {
    my $new = shift;
    say "creating proxy: $new";
    sub :lvalue {
        say "running proxy: $new";
        tie my $ret,'Some::Package',shift,$new;
        $ret
    }
}
 
say "before";
my $p1 = proxy '_value';
say "p1 declared: $p1";
my $p2 = proxy 'value';
say "p2 declared: $p2";

打印：

before
creating proxy: _value
running proxy: _value
Can't locate object method "TIESCALAR" via package "Some::Package" ...

如果返回或我的$sub =添加在sub：lvalue {…之前,一切正常工作,它打印：

before
creating proxy: _value
p1 declared: CODE(0x4c7e6c)
creating proxy: value
p2 declared: CODE(0x1ea85e4)

如果从子例程中删除：lvalue属性(但当然会更改功能),它也可以工作.

所以我的问题是为什么会发生这种情况？这是Perl中有关匿名子程序中的属性的错误吗？是由于某种原因预期的行为吗？如果是错误,是否注册？