Ok, tried it properly with a new class which inherits DEVICE::SerialPort and the direct way above. Both have the same effect:
*** Error in `/usr/bin/perl': corrupted double-linked list: 0x00000000
+0173d840 ***

[download]
or 
Segmentation fault (core dumped)

[download]

The error messages differ on the crashes. Seems the garbage collection still wants to clean up something and messes it up.

Found this. Sadly i don't understand it and don't know if this may be of any help.

Tomorrow i'll try your second suggestion. Thx alot so far.

In reply to Re^4: Problem with Threaded Socket Server by piece
in thread Problem with Threaded Socket Server by piece

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.