c:\@Work\Perl>perl -wMstrict -le
"print qq{perl version $]};
 ;;
 my %h  = qw(a aye  b bee);
 my $hr = \%h;
 ;;
 print ${ %{$hr} }{a};
 print ${ %h     }{b};
"
perl version 5.008009
aye
bee

c:\@Work\Perl>perl -wMstrict -le
"print qq{perl version $]};
 ;;
 my %h  = qw(a aye  b bee);
 my $hr = \%h;
 ;;
 print ${ %{$hr} }{a};
 print ${ %h     }{b};
"
perl version 5.010001
Can't use string ("2/8") as a HASH ref while "strict refs" in use at -e line 1.