[jdk8u-dev] RFR: 8271459: C2: Missing NegativeArraySizeException when creating StringBuilder with negative capacity

[Alexey Pavlyutkin]

On Tue, 23 Aug 2022 12:47:26 GMT, Alexey Pavlyutkin <duke at openjdk.org> wrote:

> Hi!
> 
> Here is a backport of JDK-8271459 that fixes lost NegativeArraySizeException on using StringBuilder of negative capacity. The patch from jdk-11 is applied cleanly except the path suffling.
> 
> Verification (amd64/Ubuntu 20.04): the reproducer from JBS throws 10000 of 10000 exceptions, and only ~55% (behaviour is non-deterministic) before the patch is applied
> 
> Regression: hotspot/test/runtime

ping

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PR: https://git.openjdk.org/jdk8u-dev/pull/111