I think you could set callbacks for $SIG{__DIE__} and $SIG{__WARN__}. Something in the lines of (untested):

$SIG{__DIE__}  = sub {die  log_error(shift) };#changed $_->shift
$SIG{__WARN__} = sub {warn log_error(shift) };

[download]

Edited: Changed $_ to shift

In reply to Re: Using STDERR and timestamps to write to a log file by deibyz
in thread Using STDERR and timestamps to write to a log file by jacques

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