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JNA 5.13.0: C++ Side Mutex Creation Fails with "Invalid Memory" Error

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
cpp, java
Domain
tooling

Research direction

Start by reproducing the Java JNA call to the MSVC-built C++ library using the provided createMutex example, then inspect the Java/native boundary and the mutex construction or locking point where invalid memory is reported. Done means identifying the cause of the invalid memory access and confirming a corrected interaction on Windows 10.

Written by the indexing model from the issue text.

Description

Description:

When using JNA 5.13.0 to interface with a C++ library, an issue arises where attempting to create a mutex on the C++ side results in an "invalid memory" error. This issue occurs consistently whenever the mutex creation is attempted. Below are the details of the environment and the problem:

Environment:

  • Java Version: 1.8.0_361 (Oracle JDK)
  • JNA Version: 5.13.0(5.17.0 same err)
  • Operating System: [Windows 10]
  • C++ Compiler/Environment: [MSVC]

Problem Description:
The Java application uses JNA to interact with a native C++ library.
On the C++ side, when attempting to create a std::mutex (or any other type of mutex), the program throws an error related to invalid memory access.
The error message or behavior indicates that the memory allocation or usage for the mutex is corrupted or invalid.

Example Code:

Java Side:

public interface MyLibrary extends Library {
    MyLibrary INSTANCE = Native.load("mylibrary", MyLibrary.class);

    void createMutex();
}

public class Main {
    public static void main(String[] args) {
        MyLibrary.INSTANCE.createMutex();
    }
}

C++ Side:

#include <mutex>
extern "C" {
    void createMutex() {
        std::mutex mtx; // Attempting to create a mutex
        mtx.lock();      // Error occurs here or during construction
        mtx.unlock();
    }
}

Error
java.lang.Error: Invalid memory access

Dominant language
Java
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