RFR(S): 7174363: Arrays.copyOfRange leads to VM crash with -Xcomp -server if executed by testing framework

Vladimir Kozlov vladimir.kozlov at oracle.com
Wed Jun 13 08:24:10 PDT 2012


Changes are good but. Can you make a compiler regression test from bug report test?


On 6/13/12 1:28 AM, Roland Westrelin wrote:
> http://cr.openjdk.java.net/~roland/7174363/webrev.00/
> 2 bugs with Arrays.copyOfRange:
> - The intrinsified Arrays.copyOfRange(original, from, to) uses min(original.length - from, allocated_array.length) as the number of elements to copy. If from>  original.length, this number is negative but generate_arraycopy() is called with length_never_negative set to true. That can lead to a crash.
> - if from>  to in copyOfRange(..., int from, int to) the intrinsics code lets the array allocation handle the negative length to - from which results in the wrong exception being thrown.
> Roland.

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