I am using a ClearCase::Argv module on a routine basis, and it loads and works without glitches.
Now, I start using it from an other module, ClearCase::Wrapper, which offers user customization from a script in the user home directory. It runs this one as follows: 
if (-r "$ENV{HOME}/.clearcase_profile.pl" && !
   -e "$libdir/NO_OVERRIDES") {
    require "$ENV{HOME}/.clearcase_profile.pl";
}

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I set such a script, and need within it to do a: 
require ClearCase::Argv;

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I run the same setup on Solaris perl 5.8.8, and on Cygwin perl 5.10.0.

On Solaris, no problem. On Cygwin, everything is fine, apart for one spurious warning for every run of my 'wrapper' (aliased to ct): 

$ ct des -fmt "\n" .
Name "ClearCase::Argv" used only once: possible typo at \
/usr/lib/perl5/site_perl/5.10/Argv.pm line 308.

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This second Argv module is used exactly in the same way on both platforms. The line mentioned doesn't look particularly suspicious to me: 
$ cat -n /usr/lib/perl5/site_perl/5.10/Argv.pm | sed -n 304,311p
 304    $self = {};
 305    if ($proto ne __PACKAGE__) {
 306        # Inherit class attributes from subclass class attributes.
 307        no strict 'refs';
 308        for (keys %$proto) {
 309        $self->{$_} = $proto->{$_};
 310        }
 311    }

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Any clue to help me to debug and understand this?
Thanks!
Marc

P.S. The modules are available from CPAN, but work only around a proprietary tool: IBM/ClearCase.

In reply to Spurious warning from require'd package by cramdorgi

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