# The sort of result that was no doubt expected:
$ perl -e 'use Data::Dumper; my $hr = bless {a=>1}, "H::R"; my $r = $hr; print Dumper $r'
$VAR1 = bless( {
                 'a' => 1
               }, 'H::R' );

# Reproduce output with stringification and embedded newline:
$ perl -e 'use Data::Dumper; my $hr = bless {a=>1}, "H::R"; my $r = "$hr\n"; print Dumper $r'
$VAR1 = 'H::R=HASH(0x800003b78)
';

# No bucket allocation ratio for me; also no strict to advise of problem:
$ perl -e 'use Data::Dumper; my $hr = bless {a=>1}, "H::R"; my $r = "$hr\n"; print Dumper %$r'

# Problem advice when strict is used:
$ perl -e 'use strict; use Data::Dumper; my $hr = bless {a=>1}, "H::R"; my $r = "$hr\n"; print Dumper %$r'
Can't use string ("H::R=HASH(0x800003b78)
") as a HASH ref while "strict refs" in use at -e line 1.