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GoString doesn't release java characters #13

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opened 2025-12-30 09:08:55 -05:00 by whereswaldon · 0 comments
whereswaldon commented 2025-12-30 09:08:55 -05:00
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The implementation here does not release the JNI characters after converting them to Go, which leaks the object on the JVM side.

We can see that in the spec the returned character buffer is valid until a call to ReleaseStringChars.

The implementation [here](https://git.wow.st/gmp/jni/src/commit/34026c7e22d0/jni.go#L408) does not release the JNI characters after converting them to Go, which leaks the object on the JVM side. We can see that in the [spec](https://docs.oracle.com/en/java/javase/17/docs/specs/jni/functions.html#getstringchars) the returned character buffer is valid until a call to [ReleaseStringChars](https://docs.oracle.com/en/java/javase/17/docs/specs/jni/functions.html#releasestringchars).
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Reference: gmp/jni#13
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