G'day ateague,

I tried running your code but found I didn't have JSON::XS installed under v5.24. On attempting to install using cpan, I got a message which in essence said:

"... standard perl versions 5.022 and up are not supported by JSON::XS."

The full message, in the spoiler below, was far more detailed.

<Reveal this spoiler or all in this thread>

As the installation ran to completion, I tried your script and got: 

$ pm_1175565_json_xs_sv_chop_panic.pl
End of document 1
panic: sv_chop ptr=7faa01441e79, start=7faa0140eb30, end=7faa0140ecf0 
+at ./pm_1175565_json_xs_sv_chop_panic.pl line 41, <DATA> chunk 886.

[download]

The "panic: sv_chop %s" diagnostic was introduced in v5.12 (see "perl5120delta: New Diagnostics"):

I don't have sufficient knowledge of Perl's 'C' internals to help further on that front.

You could try installing JSON::XS under a version of Perl earlier than v5.22; however, given ++stevieb's results under v5.16.3, you should probably look more closely at your script for other issues.

Also note that the current version of JSON (2.90) has (in its VERSION section):

"This version is compatible with JSON::XS 2.34 and later. (Not yet compatble to JSON::XS 3.0x.)"

So, perhaps you might have more success with earlier versions of both Perl and JSON::XS.

— Ken

In reply to Re: JSON::XS parsing error when incrementally parsing JSON file - "panic: sv_chop" by kcott
in thread [SOLVED] JSON::XS parsing error when incrementally parsing JSON file - "panic: sv_chop" by ateague

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.