$ cat foo
#!/usr/bin/env perl5.10.1
use utf8;
use strict;
use CGI::Carp qw(fatalsToBrowser);
$c;


$ ./foo   # ok
Status: 500
Content-type: text/html

<h1>Software error:</h1>
<pre>Global symbol &quot;$c&quot; requires explicit package name at ./foo line 5.
Execution of ./foo aborted due to compilation errors.
</pre>
<p>
For help, please send mail to this site's webmaster, giving this error message 
and the time and date of the error.

</p>
[Mon Jan 24 xx:xx:xx 2011] foo: Global symbol "$c" requires explicit package name at ./foo line 5.
[Mon Jan 24 xx:xx:xx 2011] foo: Execution of ./foo aborted due to compilation errors.


$ cat bar
#!/usr/bin/env perl5.12.1
use utf8;
use strict;
use CGI::Carp qw(fatalsToBrowser);
$c;


$ ./bar   # nok
BEGIN not safe after errors--compilation aborted at /usr/lib/perl5/5.12.1/Carp.pm line 104.


$ cat quux
#!/usr/bin/env perl5.12.1
# use utf8;
use strict;
use CGI::Carp qw(fatalsToBrowser);
$c;


$ ./quux  # ok
Status: 500
Content-type: text/html

<h1>Software error:</h1>
<pre>Global symbol &quot;$c&quot; requires explicit package name at ./quux line 5.
Execution of ./quux aborted due to compilation errors.
</pre>
<p>
For help, please send mail to this site's webmaster, giving this error message 
and the time and date of the error.

</p>
[Mon Jan 24 xx:xx:xx 2011] quux: Global symbol "$c" requires explicit package name at ./quux line 5.
[Mon Jan 24 xx:xx:xx 2011] quux: Execution of ./quux aborted due to compilation errors.