BitSet and negative arguments

[Mark Wielaard]

Hi,

The following was also found by inspecting the Mauve output.
We did not always throw an IndexOutOfBoundException when an argument was
negative.

2002-04-01  Mark Wielaard  <mark@klomp.org>

        * java/util/BitSet.java (BitSet(int)): if nbits < 0 throw
        NegativeArraySizeException
        (clear(int)): Use sign extended shift.
        (flip(int)): Likewise.
        (get(int)): Likewise.
        (nextClearBit(int)): Likewise.
        (nextSetBit(int)): Likewise.
        (set(int)): Likewise.

Ok to commit? Eric may want to take a look at it since I think he wrote
the original code.

Cheers,

Mark
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