[jdk8u-dev] RFR: 8298108: Add a regression test for JDK-8297684

[Andrew John Hughes]

On Mon, 27 Feb 2023 19:13:58 GMT, Severin Gehwolf <sgehwolf at openjdk.org> wrote:

> Please review this backport of the regression test for a critical fix which we've included with the January CPU update. The fix was https://bugs.openjdk.org/browse/JDK-8280890
> 
> This patch adds an additional regression test which was seen in the wild with JDK 17. The patch isn't clean since the test library in jdk8u is different so needed a bit of a different setup routine for getting the jar with the provider created. Additionally, in jdk 8 the property to add providers is setting `java.ext.dirs=...` over `java.locale.providers=SPI` in later JDKs.
> 
> Testing: The test passes for me on the current dev tree and fails with the fix from JDK-8280890 reverted.
> 
> Thoughts?

We should also probably reference [JDK-8298271](https://bugs.openjdk.org/browse/JDK-8298271) in this PR to make it clear that the issue is also resolved for 8u (it was effectively "fixed" by not using a hardcoded path separator in the first place)

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PR Comment: https://git.openjdk.org/jdk8u-dev/pull/269#issuecomment-1496396233