#!/usr/bin/perl

use IO::Handle;
print "OK\n";

##</code><code>##

$ touch Symbol.pm

$ ./891005.pl
OK

$ PERL5LIB=. ./891005.pl
Symbol.pm did not return a true value at /usr/local/perl/5.12.2/lib/5.12.2/x86_64-linux-thread-multi/IO/Handle.pm line 264.
BEGIN failed--compilation aborted at /usr/local/perl/5.12.2/lib/5.12.2/x86_64-linux-thread-multi/IO/Handle.pm line 264.
Compilation failed in require at ./891005.pl line 3.
BEGIN failed--compilation aborted at ./891005.pl line 3.