Oh Brothers and Sisters in perl I beg the fruits of your wisdom.

I have a simple script I am using to get the hang of IPC::open3. When I do the open I wrap it in an eval and die if it failed. The die however does not happen until after the rest of the script is done.

#!/usr/bin/perl use strict; use warnings; use IPC::Open3; my($in, $out, $err, $pid); open( $out, ">&STDOUT" ) or die "Can't dup STDOUT to OUTPUT: $!\n"; open( $err, ">&STDERR" ) or die "Can't dup STDERR to OUTERR: $!\n"; eval { $pid = open3($in, $out, $err, @ARGV) }; die "open3 gave trouble: $@\n" if $@; print "It is running\n"; close $in; print "stdout:\n"; print while <$out>; close $out; print "stderr:\n"; print while <$err>; close $err; __END__ # this is expected ./open3 echo "Hello World" It is running stdout: Hello World stderr: # this is confusing the proverbial out of me ./open3 nosuchcommand It is running stdout: stderr: open3 gave trouble: open3: exec of nosuchcommand failed at ./open3 lin +e 15 # The die obviosly ran but the code did not die, # ran to completion regardless then printed the error

Cheers,
R.

Pereant, qui ante nos nostra dixerunt!

In reply to delayed die and open3 by Random_Walk

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.