If that's true, it's just a little case of GIGO that can be fixed by making the push conditional. 

push @INC, $ENV{'PERL5LIB'} if exists($ENV{'PERL5LIB'});

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In reply to Re^5: Use of uninitialized value in require at ...AutoLoader.pm ? by ikegami
in thread Use of uninitialized value in require at ...AutoLoader.pm ? by jvector

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