Maybe buffering is confusing your debugging efforts?
#!/usr/bin/perl --
use strict;
use warnings;
Main(@ARGV);
warn "\nCommencing GLOBAL DESTRUCTION PHASE";
exit(0);
sub Main {
{
my $mya = MyA->new;
my $myb = MyB->new($mya);
my $myc = MyC->new($mya);
undef $mya;
}
warn "\nstill in Main";
my $myc;
{
my $mya = MyA->new;
my $myb = MyB->new($mya);
$myc = MyC->new($mya);
undef $mya;
}
warn "\nReturning from Main";
}
BEGIN {
package MyParent;
sub new { my($c)=shift; bless {@_}, $c }
sub DESTROY { warn "DESTROY @_ "; }
$INC{'MyParent.pm'}=__FILE__;
}
BEGIN {
package MyA;
use parent qw' MyParent ';
$INC{'MyA.pm'}=__FILE__;
}
BEGIN {
package MyB;
use NEXT;
use parent qw' MyParent ';
sub new { shift->SUPER::new( MyA => @_ ); }
sub DESTROY {
warn "BREAK LEAK @_ ", delete $_[0]->{MyA};
$_[0]->NEXT::DESTROY;
}
$INC{'MyB.pm'}=__FILE__;
}
BEGIN {
package MyC;
use parent qw' MyParent ';
sub new { shift->SUPER::new( MyA => @_ ); }
sub DESTROY {
warn "LEAK @_ ", $_[0]->{MyA};
$_[0]->NEXT::DESTROY;
}
$INC{'MyC.pm'}=__FILE__;
}
__END__
LEAK MyC=HASH(0xa47114) MyA=HASH(0x3f8d4c) at - line 56.
DESTROY MyC=HASH(0xa47114) at - line 31.
BREAK LEAK MyB=HASH(0x9c9864) MyA=HASH(0x3f8d4c) at - line 45.
DESTROY MyA=HASH(0x3f8d4c) at - line 31.
DESTROY MyB=HASH(0x9c9864) at - line 31.
still in Main at - line 17.
BREAK LEAK MyB=HASH(0xa47174) MyA=HASH(0x9c9864) at - line 45.
DESTROY MyB=HASH(0xa47174) at - line 31.
Returning from Main at - line 25.
LEAK MyC=HASH(0xa47124) MyA=HASH(0x9c9864) at - line 56.
DESTROY MyC=HASH(0xa47124) at - line 31.
DESTROY MyA=HASH(0x9c9864) at - line 31.
Commencing GLOBAL DESTRUCTION PHASE at - line 7.
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