BEGIN { IGNORECASE=1 }

/(^|[^a-zA-Z])warning([^a-zA-Z]|$)/ { if ($0 !~ "unused parameter" && $0 !~ "comparison between signed and unsigned" && $0 !~ "ANSI C does not support `long long'" && $0 !~ "pointer of type `void .' used in arithmetic") { print $0 } }

/^[^ :]+:[0-9]+:/ { if ($2 !~ "warning") { print $0 } }

/(^|[^a-zA-Z])error([^a-zA-Z]|$)/ { print $0 }