On Mon, 3 Feb 2025 18:51:20 GMT, Shaojin Wen <s...@openjdk.org> wrote:
> The following code can reproduce the problem, writing out of bounds causes
> JVM Crash
>
>
> StringBuilder buf = new StringBuilder();
> buf.append('δΈ');
>
> Thread[] threads = new Thread[40];
> final CountDownLatch latch = new CountDownLatch(threads.length);
> Runnable r = () -> {
> for (int i = 0; i < 1000000; i++) {
> buf.setLength(0);
> buf.trimToSize();
> buf.append(123456789123456789L);
> }
> latch.countDown();
> };
>
> for (int i = 0; i < threads.length; i++) {
> threads[i] = new Thread(r);
> }
> for (Thread t : threads) {
> t.start();
> }
> latch.await();
>
>
> This problem can be avoided by using the value of ensureCapacityInternal
> directly.
This pull request has been closed without being integrated.
-------------
PR: https://git.openjdk.org/jdk/pull/23427
