make grpc_csharp_ext compile

1 files changed, 3 insertions, 1 deletions

diff --git a/src/csharp/Grpc.Core/Internal/BatchContextSafeHandle.cs b/src/csharp/Grpc.Core/Internal/BatchContextSafeHandle.cs
index 26449ee539..0e4a77be81 100644
--- a/src/csharp/Grpc.Core/Internal/BatchContextSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/BatchContextSafeHandle.cs
@@ -71,7 +71,9 @@ namespace Grpc.Core.Internal
         // Gets data of recv_status_on_client completion.
         public ClientSideStatus GetReceivedStatusOnClient()
         {
-            string details = Marshal.PtrToStringAnsi(Native.grpcsharp_batch_context_recv_status_on_client_details(this));
+            UIntPtr detailsLength;
+            IntPtr detailsPtr = Native.grpcsharp_batch_context_recv_status_on_client_details(this, out detailsLength);
+            string details = Marshal.PtrToStringAnsi(detailsPtr, (int) detailsLength.ToUInt32());
             var status = new Status(Native.grpcsharp_batch_context_recv_status_on_client_status(this), details);
 
             IntPtr metadataArrayPtr = Native.grpcsharp_batch_context_recv_status_on_client_trailing_metadata(this);