in reply to Perl CGI.PM: Use of uninitialized value $vals
Something like this will do it (note the "-w" which I suppose you are using too):
#!/usr/bin/perl -w use CGI; CGI->STORE ('foo', undef);
So you can trigger this by passing an undefined parameter value to STORE() but only with "-w". Use warnings instead if you don't want to see it.
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