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Shouldn't LITERAL references be readonly? (updated)

by LanX (Saint)
on Aug 04, 2020 at 17:18 UTC ( [id://11120285]=perlquestion: print w/replies, xml ) Need Help??

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  1. or download this
     DB<18> use Scalar::Util qw/readonly/

...
  1
  1
 DB<26>
  2. or download this
      DB<32> x map { $_ = 1 } "str"
Modification of a read-only value attempted at (eval 42)[c:/Perl_524/l
+ib/perl5db.pl:737] line 2.
...
Modification of a read-only value attempted at (eval 43)[c:/Perl_524/l
+ib/perl5db.pl:737] line 2.
  DB<34> x map { $_ = 1 } undef
Modification of a read-only value attempted at (eval 44)[c:/Perl_524/l
+ib/perl5db.pl:737] line 2.

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