[perl #62402] Invalid p6 code can make rakudo crash

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# New Ticket Created by  pancake 
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The 0.8.2 version of parrot crashes with this invalid perl6 oneliner:

 ./perl6 -e 'my @a; my %b; @a[0].""~%b{0};'

Running this code from the pbc doesnt crash. It just shows a parsing error
message:

To crash the svn one try with this snippet:
----------
my @scores;
  @scores=(42,33,55);
  say 'scores: '....@scores[0];

my %cars;
  %cars{'foo'} = 22;
  %cars<foo>=33;
  say "cars: "~%cars{'foo'};

for @scores {
  say $_;
}
----------