Suddenly I found similar error with print: 
use warnings;
use strict;

my $A = 0;
print $A +1 == 0 ? "A\n" : "B\n";

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Can't use string ("0") as a symbol ref while "strict refs" in use at <
+...> line 5.

[download]

In reply to Re^2: map sentence with subtraction interpreted as with negative number by rsFalse
in thread map sentence with subtraction interpreted as with negative number by rsFalse

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