File::Temp->new doesn't use 'signatures' and hasn't been modified since 2013. Were you suggesting that it (or a new feature like it) may be loaded when starting the debugger? Or that the debugger has been broken in the process of adding the feature.

Thanks for the suggestion about focusing on debugging perl5db.pl. I'll have to explore that more.

In reply to Re^2: debugger is not stopping at postponed breakpoints (Signatures and PERL5DB) by jkahrman
in thread debugger is not stopping at postponed breakpoints by jkahrman

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