Can anyone explain what the macro MEM_WRAP_CHECK_1 is checking for?
Consider if your code does New(p, 0x40000000, int). Perl will try to do malloc(0x40000000 x sizeof(int)), but on a 32-bit system that would wrap round to malloc(0). The macro's there to check for it.
And how calling the callback() sub below, with the commented out line enabled, would cause that macro to be invoked, and fail, producing the message "panic: memory wrap at...", but not when the line is disabled?
Something called by the call_sv() is trying to allocate a very large structure. We can't tell what from the information supplied.

Dave.

In reply to Re: panic: memory wrap by dave_the_m
in thread panic: memory wrap by BrowserUk

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.