consider the code: 
package MyCGI;
use base qw(CGI);
use POSIX qw(access);
MyCGI-> new();

[download]
Today there's no such thing as CGI::access, so we're safe. Tomorrow, next version of CGI.pm might introduce internal "sub access" that is supposed to be called from new(), but in the code above, it mysteriously wouldn't.

In reply to Re^2: Need help with clashing method names by dk
in thread Need help with clashing method names by dk

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