B::C ignores ISA

[constantined]

testcase:

package Net::DNS::Domain;
sub new { warn "new" };

package Net::DNS::DomainName1035;
our @ISA = qw(Net::DNS::Domain);

package main;

Net::DNS::DomainName1035->new();

Compiled binary dies with Can't locate object method "new" via package "Net::DNS::DomainName1035"

[rurban]

Can you try adding a sub to the subclass? There was a limitation with empty classes in the walker as far as I remember.

[a-parser]

Adding a sub doesn't help, the problem even worse, the compiler doesn't see our @ISA = (...) during CHECK phase:

package B::isabugcompiler;
sub compile {
	warn "compile";
	warn "ISA: ", @Net::DNS::DomainName1035::ISA;
}

1;

perl -I. -MO=isabugcompiler isa-bug.pl
compile
ISA: 

The workaround is to move @ISA initialization to BEGIN phase:

use base 'Net::DNS::Domain';

But this is impossible because a huge amount of code already use direct @ISA manipulation

ENV: cperl 5.26 mingw

[constantined]

Sorry, it was invalid bug report. See #427