There's a piece of code out there called _bm_build, and it failed on me. I extracted the relevant part to create this test. 
#! /usr/bin/perl -w

use strict;

my @mystrings = ("string") x 200;

m/$mystrings[99]/;      # This compiles fine.
"$mystrings[100]";      # This compiles fine.
m/$mystrings[100]/;     # This does not.

[download]
The error I get is 
Global symbol "$mystrings" requires explicit package
name at ./maketest.pl line 9.
Execution of ./maketest.pl aborted due to compilation
errors.

[download]
The Perl package on this RHEL5 machine is perl-5.8.8-32.el5_5.1. Why does only the last line fail, and any ideas how to work around this?

Update: Added -w for warnings and added forgotten parentheses to repeat string.

In reply to Match operator fails for elements 100 and higher by thrasher

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.