On Sun, 21 Sep 2025 00:18:59 GMT, Guanqiang Han <[email protected]> wrote:
>> Please review this patch.
>>
>> **Description:**
>>
>> Currently, ModifiedUtf.utfLen returns a signed int. For very large strings,
>> this may overflow and produce negative values, leading to incorrect behavior
>> in code that relies on the UTF length. This patch changes the return type to
>> long, which fully resolves the issue and allows safe handling of giant
>> strings.
>>
>> **Test:**
>>
>> GHA
>
> Guanqiang Han has updated the pull request incrementally with one additional
> commit since the last revision:
>
> Update and rename TestUtfLen.java to ModifiedUtfTest.java
>
> rename test
test/jdk/jdk/internal/util/ModifiedUtfTest.java line 30:
> 28: * @modules java.base/jdk.internal.classfile.impl
> 29: * java.base/jdk.internal.util
> 30: * @run main/othervm -Xmx4g --add-opens
> java.base/jdk.internal.classfile.impl=ALL-UNNAMED ModifiedUtfTest
Suggestion:
* @modules java.base/jdk.internal.classfile.impl:+open
* java.base/jdk.internal.util
* @run main/othervm -Xmx4g ModifiedUtfTest
test/jdk/jdk/internal/util/ModifiedUtfTest.java line 129:
> 127: objOut.writeUTF(largeString);
> 128: } catch (Exception e) {
> 129: } finally {
You should rethrow the exception here in case of failure instead of truncating,
and you no longer need the finally block.
-------------
PR Review Comment: https://git.openjdk.org/jdk/pull/27285#discussion_r2369546515
PR Review Comment: https://git.openjdk.org/jdk/pull/27285#discussion_r2366216969
