Fix by misc-definitions-in-headers

src/core/lib/iomgr/python_util.h

@@ -29,17 +29,17 @@
 // They are easier to define here (rather than in Cython)
 // because Cython doesn't handle #defines well.
 
-grpc_error* grpc_socket_error(char* error) {
+inline grpc_error* grpc_socket_error(char* error) {
   return grpc_error_set_int(GRPC_ERROR_CREATE_FROM_COPIED_STRING(error),
                             GRPC_ERROR_INT_GRPC_STATUS,
                             GRPC_STATUS_UNAVAILABLE);
 }
 
-char* grpc_slice_buffer_start(grpc_slice_buffer* buffer, int i) {
+inline char* grpc_slice_buffer_start(grpc_slice_buffer* buffer, int i) {
   return (char*)GRPC_SLICE_START_PTR(buffer->slices[i]);
 }
 
-int grpc_slice_buffer_length(grpc_slice_buffer* buffer, int i) {
+inline int grpc_slice_buffer_length(grpc_slice_buffer* buffer, int i) {
   return GRPC_SLICE_LENGTH(buffer->slices[i]);
 }
 

test/cpp/microbenchmarks/callback_unary_ping_pong.h

@@ -36,10 +36,10 @@ namespace testing {
  * BENCHMARKING KERNELS
  */
 
-void SendCallbackUnaryPingPong(benchmark::State* state, ClientContext* cli_ctx,
-                               EchoRequest* request, EchoResponse* response,
-                               EchoTestService::Stub* stub_, bool* done,
-                               std::mutex* mu, std::condition_variable* cv) {
+inline void SendCallbackUnaryPingPong(
+    benchmark::State* state, ClientContext* cli_ctx, EchoRequest* request,
+    EchoResponse* response, EchoTestService::Stub* stub_, bool* done,
+    std::mutex* mu, std::condition_variable* cv) {
   int response_msgs_size = state->range(1);
   cli_ctx->AddMetadata(kServerMessageSize, std::to_string(response_msgs_size));
   stub_->experimental_async()->Echo(