I'm using 5.6.2 and got that same error. I fixed it by doing:
@b=@_;@_=@b; # then preceed as usual
I bet the problem is that you are calling the function as
score(qw/X 6 5 7 9 ...../);
@arr = qw/X 4 5 6 .../; score(@arr);
Map is modifying the content of the list (using s#...#10#). Passing a list (constant) to the sub makes @_ elements aliases to the values passed. This is just like saying
"helo" =~ s/l/ll/;
which does not make sense.
Did I make myself clear? Does it make sense?
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