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  1. or download this
    package Bad;

...
}

1;
  2. or download this
    $ perl -le '
    use Bad;
...
'
Use of uninitialized value $Bad::x in concatenation (.) or string at B
+ad.pm line 6.
Undeclared: >>><<<
  3. or download this
    $ perl -le '
    use Bad;
...
'
Use of uninitialized value $Bad::x in concatenation (.) or string at B
+ad.pm line 6.
Undeclared: >>><<<
  4. or download this
    $ perl -le '
    use Bad;
...
    Bad::gen_warning();
'
Undeclared: >>><<<