Perl doesn't always handle \0 in strings properly. 

>dir

 Directory of dir

2006/06/15  05:58p      <DIR>          .
2006/06/15  05:58p      <DIR>          ..
               0 File(s)              0 bytes
               2 Dir(s)   2,322,644,992 bytes free

>echo file contents > file

>perl -e "open($fh, qq{file\0junk}) or die; print <$fh>;"
file contents

[download]

Be wary of system calls and library calls.

Update: Some might say this is the OS's fault, but I expect better of Perl. Conversion from SV to char* results in a loss of information, but Perl apparently assumes it's a safe operation. I shouldn't have to know implementation details of a language's builtins.

In reply to Re: How is perl able to handle the null byte? by ikegami
in thread How is perl able to handle the null byte? by muba

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.