Alias.xs:369: error: ‘Nullsv’ undeclared (first use in this function) Alias.xs:369: error: (Each undeclared identifier is reported only once Alias.xs:369: error: for each function it appears in.)
*** Bug 321777 has been marked as a duplicate of this bug. ***
See also http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=581268
Dropped Data-Alias dependency from Data-Visitor. Thanks Michele. The tests succeed with a warning.