Fatal crash on Android API ≤ 25 when persisting entity containing list with over 500 elements

[jacobian2020]

Is there an existing issue?

• I have searched existing issues

Build info

• ObjectBox version: 4.3.1
• OS: [Android 7 ]
• Device/ABI/architecture: [ arm64-v8a | x86-64 ]

Steps to reproduce

Run the provided sample project, or refer to the Java code attached in this post for a minimal example.

Expected behavior

The object should be stored without error, regardless of list size or platform version.

Actual behavior

Application crashes fatally during the operation on devices running Android API level 25 or lower.

Code

Run the provided sample project, or refer to the Java code attached in this post for a minimal example.

objectbox-bug-upload.zip

Code

@Entity
data class Data (
    @Id
    var _id: Long = 0,
    var ids: List<String> = listOf(),
)
box.put(
            Data(
                ids = IntRange(0,512).map { //crash on API 25, < 400 works
                    "$it"
                }
            )
        )

Logs, stack traces

TODO Add relevant logs, a stack trace or crash report.

Logs

[jacobian2020]

@greenrobot @greenrobot-team A timely resolution would be appreciated, as this issue causes complete application failure on affected platforms.

[greenrobot-team]

@jacobian2020 Thanks for reporting including the example project!

I could verify this and have created an internal issue (objectbox-java#278).

The issue is that the JNI local reference table is overflowing (its limit is 512 items) due to the large number of Strings.

[greenrobot]

This should be fixed in the 5.0.0 release. @jacobian2020 Can you verify?