Should work.

Does work with 5.10.1 and 5.12.1: 

$ perl -e'print "foo,bar,baz\r\n";' > myfile.csv

$ perl -e'
   use strict;
   use warnings;
   use open IN => ":crlf";

   while (<>) {
     die ("Carriage return in $ARGV") if (/\r/);
   }

   open (INPUT, "myfile.csv") or die ("Can'\''t open myfile.csv");
   while (<INPUT>) {
     die("Carriage return in myfile.csv") if (/\r/);
   }

   print "ok\n";
' myfile.csv
ok

[download]

Are you sure there are no CR other than right before a LF? 

      if (/\r/) {
         require Data::Dumper;
         local $Data::Dumper::Useqq = 1;
         local $Data::Dumper::Terse = 1;
         local $Data::Dumper::Indent = 0;
         die ("Carriage return in myfile.csv " . Data::Dumper::Dumper(
+$_));
      }

[download]

In reply to Re: crlf layer working on diamond operator, but not filehandle reads by ikegami
in thread crlf layer working on diamond operator, but not filehandle reads by rebugger

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.