For 10 elements:
runloop unable to compile ' my @res = zip(   @a,  @b ) ': 
Global symbol "@a" requires explicit package name at (eval 4) line 1.
Global symbol "@b" requires explicit package name at (eval 4) line 1.

code: sub { for (1 .. 1) { local $_; package main;  my @res = zip(   @a,  @b ) ;} }
 at c:\test\junk9.pl line 29