Our program has some memory issues (occasionally in the production environment). We suspect that it is related to the change of object addresses after memory defragmentation after GC. We want to verify whether some of our modifications are effective locally, but I have no way to reproduce this problem locally.

I tried the code but it didn’t work. The returned result address is always the same.

static async Task Main(string[] args)
{
    // Create an object
    object obj = new object();

    // Get the object's address
    GCHandle handle = GCHandle.Alloc(obj);
    IntPtr addressBefore = GCHandle.ToIntPtr(handle);

    Console.WriteLine($"Object address (before GC): {addressBefore}");

    // Perform garbage collection
    GC.Collect();
    GC.WaitForPendingFinalizers();
    GC.Collect();

    // Get the object's address again
    IntPtr addressAfter = GCHandle.ToIntPtr(handle);

    Console.WriteLine($"Object address (after GC): {addressAfter}");

    // Check if the address has changed
    if (addressBefore == addressAfter)
    {
        Console.WriteLine("The object address has not changed.");
    }
    else
    {
        Console.WriteLine("The object address has changed.");
    }

    // Release the GCHandle
    handle.Free();
}

output:

Object address (before GC): 1886222095248
Object address (after GC): 1886222095248
The object address has not changed.