I wrote the following Inline::C function to work through what it takes to create a scalar successfully. The string portion of the scalar is not null and I thought it should be. Am I doing this wrong or am I expected to zero it out manually?

$ perl new.pl SV = PV(0x7460) at 0x35cb4 REFCNT = 1 FLAGS = (TEMP) PV = 0x6330 " \0w.pl\0\0\0\0"\0 CUR = 10 LEN = 11
use Devel::Peek; use Inline C=> 'DATA'; Dump(foo( 10 )); sub vis { map { join '', map sprintf("\\%o", ord), split // } @_ } __DATA__ __C__ SV* foo(int nr) { SV* out = NEWSV(535,nr); SvUPGRADE(out,SVt_PV); SvCUR_set(out,nr); return (out); }

In reply to NEWSV'd scalar isn't initially empty? by diotalevi

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.