Is there a way in perl's debugger to watch a reference or a memory location? Let's say, with code like 
1:    my %hash = (a => 'b');  # Watch %hash
2:
3:    my $ref = \%hash;       # Breakpoint!
4:    ### ... some code ...
5:    my $otherref = \%hash;  # Breakpoint!
6:    my $yetanotherref = $otherref; # Breakpoint!

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is there a way in line 1 (or 3) to set a watch point in the debugger so that whenever %hash is referenced somehow (for reading or writing), the debugger stops?

Or is there a way to say "whenever you reference HASH(0x81049b0), let the debugger stop"?

Any help apprechiated.

In reply to How to watch a reference in the debugger? by saintmike

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