Update: ack, this appears to be a pre-5.8.0 bug as it's fine after 5.8.0 e.g

shell> perl5.8.0 pmsopw_304778.pl
loop: pre
buh-bye: sub
buh-bye: sub
loop: inside
buh-bye: for
loop: inside
buh-bye: for
loop: post
[download]

Perhaps this is a better illustration of the problem

sub DESTROY {
  print "bye: @{$_[0]}\n";
}

sub f {
  my $funcobj = bless["sub"];
  return 1;
}

print "loop: pre\n";
for( f(), f() ) {
  print "loop: inside\n";
  my $forobj = bless ["for"];
}
print "loop: post\n";

__output__

loop: pre
loop: inside
bye:  for
loop: inside
bye:  for
bye:  sub
bye:  sub
loop: post
[download]

So $funcobj, which one would assume to be GCed upon the exit of f(), sticks around until the end of the for loop regardless of the fact that nothing is referencing it.

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