RFR: 8283325: US_ASCII decoder relies on String.decodeASCII being exhaustive [v2]

[Roger Riggs]

On Thu, 17 Mar 2022 19:47:14 GMT, Claes Redestad <redestad at openjdk.org> wrote:

>> Adjust `String.decodeASCII` to deal with the possibility that `StringCoding.countPositives` can return a value less than the exact number of leading positive bytes. This is the likely cause of a number of intermittent but somewhat common errors on aarch64 tests in our CI.
>
> Claes Redestad has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add comment, remove redundant Arrays.fill

Marked as reviewed by rriggs (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/7855