RFR: 8325002: Exceptions::fthrow needs to ensure it truncates to a valid utf8 string [v2]

[David Holmes]

On Sat, 27 Jul 2024 12:15:50 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> Keep in mind that 0xed a few lines above could have matched the first byte and not the fourth one.
>
> So ... the first three bytes of a six byte sequence can be indistinguishable from a three byte sequence! How does that work???

github seems to have swallowed my comment so at the risk of repeating it ...

Thanks for the off-list discussion @djelinski , I now understand what you meant. The code and comments are updated.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20345#discussion_r1694938900