Please review: surrogate fiddle

Martin Buchholz martinrb at
Tue Mar 19 06:04:44 UTC 2013

On Mon, Mar 18, 2013 at 7:44 PM, Masayoshi Okutsu <
masayoshi.okutsu at> wrote:

> Thank you for catching this bug. AbstractStringBuilder.**codePointAt(int)
> should have called Character.codePointAt(char[], int, int).
> As for duplicating code, I originally duplicated similar code everywhere
> for performance. But someone told me probably during code review that
> hotspot inlining was as good as C/C++ macros, and I agreed to replace the
> duplicated code with method calls.
For classes as important as important as StringBuilder, I think we should
go the extra mile to ensure best performance, but if you guys insist, I
will "merely" fix the bug.  If you call the Character method, you will be
doing bounds checking twice (or thrice, if you count builtin array
checking), and there's a chance that hotspot will be able to optimize it
away, but I am not so trusting.


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