memGzip only supports binary data / single-byte characters. You probably should wrap the zip/unzip in encode/decode calls: 

use Encode qw(encode decode);
my $zipped = memGzip(encode("utf8",$string));
my $unzipped = decode("utf8",memGunzip($zipped));

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In reply to Re: Wide character - memGzip by Joost
in thread Wide character - memGzip by horrendo

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