I knew someone would ask that question. :-)

Sample broken module:

use strict;
use warnings;
$x=1;

[download]

Sample code using string eval (the above example from Anonymous dies before the print statement because it uses a constant module name within the non-string eval form and hence is fully evaluated at compile time.)

  my $sFile = 'Monks/Foo/Bar.pm';
  my $result = eval("require Monks::Foo::Bar");
  my $error = $@;

  print "=== Eval results ===\n";
  print "result=<". (defined($result)?$result:'undef')
    .">\n\$@=<". (defined($error)?$error:'undef') .">\n";
  print "=== Contents of %INC ===\n";
  print "\$INC{$sFile}=<"
    . (defined($INC{$sFile}) ? $INC{$sFile} : 'undef') . ">\n";

[download]

Which outputs

=== Eval results ===
result=<undef>
$@=<Global symbol "$x" requires explicit package name at Monks/Foo/Bar
+.pm line 3.
Compilation failed in require at (eval 1) line 3.
>
=== Contents of %INC ===
$INC{Monks/Foo/Bar.pm}=<Monks/Foo/Bar.pm>

[download]

Q.E.D.

Best, beth

P.S. Using eval { $result=require($sFile); } yields the same output, so its not just the string version of eval.

Update: scripts run on Perl 5.8.8

In reply to Re^2: Detecting broken modules by ELISHEVA
in thread Detecting broken modules by ELISHEVA

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