That sounds like perl is remembering an error from an earlier failed write and reporting it when the pipe is closed or something else entirely is going on...

I finally searched perldiag for "unable to close filehandle" and that message indicates that the "implicit close done by an open got an error indication" so now I must ask: what is sub P?

In reply to Re^5: question on getting SIGPIPE in close by jcb
in thread question on getting SIGPIPE in close by perl-diddler

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