Hmm, really? I always thought the while-loop EXPR was re-evaluated after each iteration:
my @a = (3, 4);

while (do { say "yo"; @a })
{
  say "hi mom";
  shift @a;  # no explicit loop break out
}

say "bye mom";

__END__
yo
hi mom
yo
hi mom
yo
bye mom

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In reply to Re^2: arrays: shifting in while loop by repellent
in thread arrays: shifting in while loop by ivanthemad

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