There are many places that are going to write directly to the *STDERR handle via the C-side Perl_debug_log variable. In all places I've noticed this goes through PerlIO. I think you can add a layer to the variable. I've never actually tried this but I'd just recommend checking out perlio and PerlIO::via. It looks like it'd be fairly easy to make a wrapper that'd just write to some alternate location.

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In reply to Re: catch errors within C by diotalevi
in thread catch errors within C by spacepille

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