As I noted in the perl ticket:
This was a bug waiting to happen. Commit 7d69d4a61b happened to change the order in
which keys came out of %::. So Parse::Trace, which goes iterating through the stash looking
for a variable containing $self (for verbose output), happened to stumble across $^V, which
has explosive overloaded methods. (I think version objects are very un-perlish in that
regard, but I doubt I could convince the author of version.pm.)
So it looks as though ParseLex needs to work around this, otherwise it’s just by chance that it
passes its tests.
Changing line 30 of Trace.pm from
return $symbol if ($value eq $self);
to
return $symbol if eval { $value eq $self };
or
return $symbol if ref $value eq ref $self && $value eq $self;
should work. (Without benchmarking it, I think the latter would be faster.)
RT for rt.cpan.org