> Results in a syntax error

this shouldn't be, the problem must be somewhere in your code.

I looked into the code of MCE::Loop and it works like I guessed.

That's what's essentially happening in the import

  DB<8> sub run (&@) {}

  DB<9> *mce_loop = \&run

  DB<10> mce_loop {print "code"}

  DB<11> mce_loop sub {print "code"}

  DB<12> mce_loop sub {print "code"},@_

  DB<13> mce_loop 1
Type of arg 1 to main::run must be block or sub {} (not constant item)
+ at
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