"Will not stay shared" is a warning that indicates one made the error of nesting nesting named subs. Specifically, it is issued when an inner named sub captures vars from the outer sub. 

$ perl -we'sub outer { my $x; sub inner { $x } }'
Variable "$x" will not stay shared at -e line 1.

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Don't nest named subs. It's not like inner is private to outer.

"Global symbol requires explicit package name" is an error detected by "use strict;". 

$ perl -we'use strict; $i'
Global symbol "$i" requires explicit package name at -e line 1.
Execution of -e aborted due to compilation errors.

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Loading Carp::Always might be a simple way of getting useful diagnostics.

I notice the eval counter (if such a thing exists) in each case seems to be very close to 10**9.

109 is not a particularly interesting number to computers. If it was 22n or 22n-1 (e.g. 28, 215, 216, 231, 232, etc), then it would get my attention.

(Why oh why do you generate and execute so many code snippets!)

In reply to Re: Interpreter eval counter out of bounds by ikegami
in thread Interpreter eval counter out of bounds by andreas1234567

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