I would think that the eval should be (otherwise I wouldn't expect any error):
my $result = eval "use IO::Tee;";
die "Couldn't use IO::Tee: $@";

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update: sorry I did not see the $@ in the line below your use statement until now

In reply to Re: eval "use Module::Name" silently dies under MS IIS/PerlIs.dll by runrig
in thread eval "use Module::Name" silently dies under MS IIS/PerlIs.dll by Jenda

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