$ perl -e 'BEGIN { $x = 1 } use strict;'

$ perl -e 'use strict; BEGIN { $x = 1 }'
Global symbol "$x" requires explicit package name (did you forget to declare "my $x"?) at -e line 1.
BEGIN not safe after errors--compilation aborted at -e line 1.

$ perl -e 'local $x; use strict;'

$ perl -e 'use strict; local $x;'
Global symbol "$x" requires explicit package name (did you forget to declare "my $x"?) at -e line 1.
Execution of -e aborted due to compilation errors.

$ perl -e 'use strict; local $x; no strict "vars";'
Global symbol "$x" requires explicit package name (did you forget to declare "my $x"?) at -e line 1.
BEGIN not safe after errors--compilation aborted at -e line 1.

$ perl -e 'use strict; no strict "vars"; local $x;'

$ 

##</code><code>##

$ corelist IO::File

Data for 2022-05-27
IO::File was first released with perl 5.00307

##</code><code>##

$ perl -E 'print("Hello, world!\n"); say $INC{"IO/File.pm"};'
Hello, world!

$ perl -E 'STDOUT->print("Hello, world!\n"); say $INC{"IO/File.pm"};'
Hello, world!
/home/ken/perl5/perlbrew/perls/perl-5.36.0/lib/5.36.0/cygwin-thread-multi/IO/File.pm