Not sure if $DB::dbline[$DB::lineno] does what you want², but I think you are looking for w watch expression¹ not b breakpoint.

In your case I'd rather try to temporarily overwrite print with a wraper sub which sets $DB::single=1

> Can one not access the DB package from the debugger command line?

Thats a value set at run-time , and I suppose it's immediately deleted after causing a break.

Cheers Rolf

( addicted to the Perl Programming Language)

see also

update

¹) Sorry watch doesn't do what I thought. It monitors variable changes w/o conditions. And there are no global break conditions, they are bound to line-numbers.

There are several possible workarounds but IMHO overwriting print seems the simplest.

²) no it doesn't '@dbline' is where breakpoints are stored

In reply to Re: Make debugger break on source lines matching a pattern by LanX
in thread Make debugger break on source lines matching a pattern by Yary

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