in reply to Modification of non-creatable hash value attempted

Thanks for the responses. I can't use delete() because I need the keypair to still be there. Haven't tried to create a simplified script+data to reproduce this, but the problem is fully reproducible on my real script+data. Worked around it by avoiding undef values in the first place, so my problem is solved for now. Still a bit curious about the error message and why it happened though.

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Re^2: Modification of non-creatable hash value attempted
by Joost (Canon) on Mar 08, 2008 at 00:38 UTC
Re^2: Modification of non-creatable hash value attempted
by Anonymous Monk on Mar 08, 2008 at 15:14 UTC
    Modification of non-creatable hash value attempted, %s (P) You tried to make a hash value spring into existence, and it couldn't be created for some peculiar reason.

    (P) An internal error you should never see (trappable).