Question NativeList InvalidOperationException: Attempted to operate on {size} bytes of memory: nonsensical

Whenever I call NativeList.Add(), I am getting this exception. Anyone have any idea how this could happen?

InvalidOperationException: Attempted to operate on {size} bytes of memory: nonsensical

Unity.Collections.Memory.CheckByteCountIsReasonable (System.Int64 size) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/Memory.cs:153)

Unity.Collections.Memory+Unmanaged+Array.Resize (System.Void* oldPointer, System.Int64 oldCount, System.Int64 newCount, Unity.Collections.AllocatorManager+AllocatorHandle allocator, System.Int64 size, System.Int32 align) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/Memory.cs:78)

Unity.Collections.Memory+Unmanaged.Allocate (System.Int64 size, System.Int32 align, Unity.Collections.AllocatorManager+AllocatorHandle allocator) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/Memory.cs:20)

Unity.Collections.AllocatorManager.TryLegacy (Unity.Collections.AllocatorManager+Block& block) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/AllocatorManager.cs:851)

Unity.Collections.AllocatorManager.Try (Unity.Collections.AllocatorManager+Block& block) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/AllocatorManager.cs:883)

Unity.Collections.AllocatorManager+AllocatorHandle.Try (Unity.Collections.AllocatorManager+Block& block) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/AllocatorManager.cs:511)

Unity.Collections.AllocatorManager.AllocateBlock[T] (T& t, System.Int32 sizeOf, System.Int32 alignOf, System.Int32 items) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/AllocatorManager.cs:34)

Unity.Collections.AllocatorManager.Allocate[T] (T& t, System.Int32 sizeOf, System.Int32 alignOf, System.Int32 items) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/AllocatorManager.cs:46)

Unity.Collections.LowLevel.Unsafe.UnsafeList`1[T].Realloc[U] (U& allocator, System.Int32 newCapacity) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/UnsafeList.cs:375)

Unity.Collections.LowLevel.Unsafe.UnsafeList`1[T].SetCapacity[U] (U& allocator, System.Int32 capacity) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/UnsafeList.cs:410)

Unity.Collections.LowLevel.Unsafe.UnsafeList`1[T].SetCapacity (System.Int32 capacity) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/UnsafeList.cs:419)

Unity.Collections.LowLevel.Unsafe.UnsafeList`1[T].Resize (System.Int32 length, Unity.Collections.NativeArrayOptions options) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/UnsafeList.cs:351)

Unity.Collections.LowLevel.Unsafe.UnsafeList`1[T].Add (T& value) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/UnsafeList.cs:493)

Unity.Collections.NativeList`1[T].Add (T& value) (at Library/PackageCache/com.unity.collections@1.2.3/Unity.Collections/NativeList.cs:332)

 

Had the same and went nuts. But then I tried not creating those NativeLists inside the Job but before and pass them in via the struct & the error went away.

Edit:
Ok, somehow the fix did not work anymore today. Instead, today removing `CompileSynchronously= True` fixed it :/

 

Adding too many items can result in this error