I would like the following code to be a fatal error. How do I do this?

$ref = \ $var;
"$ref"

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$ref = \ $var;
print $ref;

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theorbtwo had a suggestion but it only covers stringifying blessed references.

package UNIVERSAL;
use overload q("") => sub { die "Attempt to stringify reference" };

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In reply to How to prevent references from stringifying? by diotalevi

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