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  1. or download this
      DB<3> use strict; my $x=3; if (my $x =1) { print $x }
1
...
Global symbol "$x" requires explicit package name (did you forget to d
+eclare "my $x"?) at (eval 13)[C:/Perl_524/lib/perl5db.pl:737] line 2.

  DB<5>
  2. or download this
    >>perl -MO=Deparse,-x7 -e"if (my $x =1) { print $x }; print $x"
my $x = 1 and do {
...
};
print $x;                      # <-- no error under strict!
-e syntax OK