windows needs fflush after fprintf

1 files changed, 2 insertions, 0 deletions

diff --git a/test/core/util/debugger_macros.cc b/test/core/util/debugger_macros.cc
index f1e4ffd3af..bb96fc7054 100644
--- a/test/core/util/debugger_macros.cc
+++ b/test/core/util/debugger_macros.cc
@@ -39,6 +39,7 @@ grpc_stream* grpc_transport_stream_from_call(grpc_call* call) {
       grpc_subchannel_call* scc = grpc_client_channel_get_subchannel_call(el);
       if (scc == nullptr) {
         fprintf(stderr, "No subchannel-call");
+        fflush(stderr);
         return nullptr;
       }
       cs = grpc_subchannel_call_get_call_stack(scc);
@@ -46,6 +47,7 @@ grpc_stream* grpc_transport_stream_from_call(grpc_call* call) {
       return grpc_connected_channel_get_stream(el);
     } else {
       fprintf(stderr, "Unrecognized filter: %s", el->filter->name);
+      fflush(stderr);
       return nullptr;
     }
   }