I'm profiling my (now fixed) Regexp::Approx - Use fuzzy regular expressions module with Devel::DProf and I get these "$foo has $bar unstacked calls in outer" warnings. What do they mean and should I be concerned?

$ /home/josh/perl5.8.1/bin/dprofpp -R -I -p app
cau[teriz]e
radios[teril]ize
File::Glob::AUTOLOAD has -5 unstacked calls in outer
Exporter::Heavy::heavy_export has 2 unstacked calls in outer
Storable::freeze has 1 unstacked calls in outer
Exporter::export has -2 unstacked calls in outer
AutoLoader::AUTOLOAD has -2 unstacked calls in outer
Storable::_freeze has 1 unstacked calls in outer
File::Glob::GLOB_BRACE has 1 unstacked calls in outer
File::Glob::GLOB_ALPHASORT has 1 unstacked calls in outer
File::Glob::GLOB_QUOTE has 1 unstacked calls in outer
File::Glob::GLOB_TILDE has 1 unstacked calls in outer
File::Glob::GLOB_NOMAGIC has 1 unstacked calls in outer
POSIX::load_imports has 1 unstacked calls in outer
POSIX::AUTOLOAD has -1 unstacked calls in outer
Total Elapsed Time = 28.79804 Seconds
  User+System Time = 6.748043 Seconds
Inclusive Times
%Time ExclSec CumulS #Calls sec/call Csec/c  Name
 84.7   1.994  5.721   3309   0.0006 0.0017  Regexp::Approx::rmatch
 31.9   2.158  2.158   3309   0.0007 0.0007  Regexp::Approx::_read_msg
 23.2   1.568  1.568   3310   0.0005 0.0005  Regexp::Approx::_send_msg

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In reply to Devel::DProf's "unstacked calls in outer" warning? by diotalevi

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