OK I'm seeing clearer now.

1. my code was wrong in that part

            package ALIEN;
            no warnings "redefine";
            sub DOMAIN_PORT() {
                666
            }

[download]

it's better written as

            no warnings "redefine";
            *ALIEN::DOMAIN_PORT = sub() {
                666
            };

[download]

2. But this creates a weird error

Attempt to free unreferenced scalar: SV 0x6917d8, Perl interpreter: 0x767b98 at d:/tmp/pm/patch_constant.pl line 41.

Which is most likely explained by %SIG

__DIE__/__WARN__ handlers are very special in one respect: they may be called to report (probable) errors found by the parser. In such a case the parser may be in inconsistent state, so any attempt to evaluate Perl code from such a handler will probably result in a segfault. This means that warnings or errors that result from parsing Perl should be used with extreme caution, like this:

bottom line

nice idea, but no luck :/

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^3: How to redefine a modules private function? by LanX
in thread How to redefine a modules private function? by sectokia

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