On Tue, 12 Nov 2024 11:24:24 GMT, Shaojin Wen <[email protected]> wrote:
>> In the JDK code, there are some places that may cause Unsafe offset
>> overflow. The probability of occurrence is low, but if it occurs, it will
>> cause JVM crash.
>
> Shaojin Wen has updated the pull request incrementally with one additional
> commit since the last revision:
>
> rename address to offset, from @AlanBateman
I want to add such a test case, but I am worried that it will consume too many
resources during the build process.
/**
* @test
* @bug 8343984
* @summary Test that the append capacity is close to Integer.MaxValue
* @run main/othervm -Xms6g -Xmx6g HugeAppend
*/
public final class HugeAppend {
public static void main(String[] args) {
StringBuilder buf = new StringBuilder();
int loop4 = Integer.MAX_VALUE / 4;
for (int i = 0; i < loop4; i++) {
buf.append(true);
}
buf.setLength(0);
int loop5 = Integer.MAX_VALUE / 5;
for (int i = 0; i < loop5; i++) {
buf.append(false);
}
}
}
-------------
PR Comment: https://git.openjdk.org/jdk/pull/22027#issuecomment-2470377122
