Fix gRPC ObjC void function definition

5 files changed, 17 insertions, 17 deletions

diff --git a/src/objective-c/GRPCClient/private/GRPCConnectivityMonitor.h b/src/objective-c/GRPCClient/private/GRPCConnectivityMonitor.h
index 8d3c45ee50..cb55e46d70 100644
--- a/src/objective-c/GRPCClient/private/GRPCConnectivityMonitor.h
+++ b/src/objective-c/GRPCClient/private/GRPCConnectivityMonitor.h
@@ -57,6 +57,6 @@
  * Only one handler is active at a time, so if this method is called again before the previous
  * handler has been called, it might never be called at all (or yes, if it has already been queued).
  */
-- (void)handleLossWithHandler:(nullable void (^)())lossHandler
-      wifiStatusChangeHandler:(nullable void (^)())wifiStatusChangeHandler;
+- (void)handleLossWithHandler:(nullable void (^)(void))lossHandler
+      wifiStatusChangeHandler:(nullable void (^)(void))wifiStatusChangeHandler;
 @end
diff --git a/src/objective-c/GRPCClient/private/GRPCConnectivityMonitor.m b/src/objective-c/GRPCClient/private/GRPCConnectivityMonitor.m
index b322638500..c8e10dd75f 100644
--- a/src/objective-c/GRPCClient/private/GRPCConnectivityMonitor.m
+++ b/src/objective-c/GRPCClient/private/GRPCConnectivityMonitor.m
@@ -136,8 +136,8 @@ static void PassFlagsToContextInfoBlock(SCNetworkReachabilityRef target,
   return returnValue;
 }
 
-- (void)handleLossWithHandler:(nullable void (^)())lossHandler
-      wifiStatusChangeHandler:(nullable void (^)())wifiStatusChangeHandler {
+- (void)handleLossWithHandler:(nullable void (^)(void))lossHandler
+      wifiStatusChangeHandler:(nullable void (^)(void))wifiStatusChangeHandler {
   __weak typeof(self) weakSelf = self;
   [self startListeningWithHandler:^(GRPCReachabilityFlags *flags) {
     typeof(self) strongSelf = weakSelf;
diff --git a/src/objective-c/GRPCClient/private/GRPCHost.m b/src/objective-c/GRPCClient/private/GRPCHost.m
index f73e9cbc50..a0f4118740 100644
--- a/src/objective-c/GRPCClient/private/GRPCHost.m
+++ b/src/objective-c/GRPCClient/private/GRPCHost.m
@@ -93,7 +93,7 @@ static GRPCConnectivityMonitor *connectivityMonitor = nil;
     if (!connectivityMonitor) {
       connectivityMonitor =
       [GRPCConnectivityMonitor monitorWithHost:hostURL.host];
-      void (^handler)() = ^{
+      void (^handler)(void) = ^{
         [GRPCHost flushChannelCache];
       };
       [connectivityMonitor handleLossWithHandler:handler
diff --git a/src/objective-c/GRPCClient/private/GRPCWrappedCall.h b/src/objective-c/GRPCClient/private/GRPCWrappedCall.h
index 1cd9da8f3e..f569895e7c 100644
--- a/src/objective-c/GRPCClient/private/GRPCWrappedCall.h
+++ b/src/objective-c/GRPCClient/private/GRPCWrappedCall.h
@@ -30,24 +30,24 @@
 @interface GRPCOpSendMetadata : GRPCOperation
 
 - (instancetype)initWithMetadata:(NSDictionary *)metadata
-                         handler:(void(^)())handler;
+                         handler:(void(^)(void))handler;
 
 - (instancetype)initWithMetadata:(NSDictionary *)metadata
                            flags:(uint32_t)flags
-                         handler:(void(^)())handler NS_DESIGNATED_INITIALIZER;
+                         handler:(void(^)(void))handler NS_DESIGNATED_INITIALIZER;
 
 @end
 
 @interface GRPCOpSendMessage : GRPCOperation
 
 - (instancetype)initWithMessage:(NSData *)message
-                        handler:(void(^)())handler NS_DESIGNATED_INITIALIZER;
+                        handler:(void(^)(void))handler NS_DESIGNATED_INITIALIZER;
 
 @end
 
 @interface GRPCOpSendClose : GRPCOperation
 
-- (instancetype)initWithHandler:(void(^)())handler NS_DESIGNATED_INITIALIZER;
+- (instancetype)initWithHandler:(void(^)(void))handler NS_DESIGNATED_INITIALIZER;
 
 @end
 
@@ -79,7 +79,7 @@
                         path:(NSString *)path
                      timeout:(NSTimeInterval)timeout NS_DESIGNATED_INITIALIZER;
 
-- (void)startBatchWithOperations:(NSArray *)ops errorHandler:(void(^)())errorHandler;
+- (void)startBatchWithOperations:(NSArray *)ops errorHandler:(void(^)(void))errorHandler;
 
 - (void)startBatchWithOperations:(NSArray *)ops;
 
diff --git a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
index b0b1223b64..d26d13475d 100644
--- a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
+++ b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
@@ -36,12 +36,12 @@
   // Most operation subclasses don't set any flags in the grpc_op, and rely on the flag member being
   // initialized to zero.
   grpc_op _op;
-  void(^_handler)();
+  void(^_handler)(void);
 }
 
 - (void)finish {
   if (_handler) {
-    void(^handler)() = _handler;
+    void(^handler)(void) = _handler;
     _handler = nil;
     handler();
   }
@@ -55,13 +55,13 @@
 }
 
 - (instancetype)initWithMetadata:(NSDictionary *)metadata
-                         handler:(void (^)())handler {
+                         handler:(void (^)(void))handler {
   return [self initWithMetadata:metadata flags:0 handler:handler];
 }
 
 - (instancetype)initWithMetadata:(NSDictionary *)metadata
                            flags:(uint32_t)flags
-                         handler:(void (^)())handler {
+                         handler:(void (^)(void))handler {
   if (self = [super init]) {
     _op.op = GRPC_OP_SEND_INITIAL_METADATA;
     _op.data.send_initial_metadata.count = metadata.count;
@@ -92,7 +92,7 @@
   return [self initWithMessage:nil handler:nil];
 }
 
-- (instancetype)initWithMessage:(NSData *)message handler:(void (^)())handler {
+- (instancetype)initWithMessage:(NSData *)message handler:(void (^)(void))handler {
   if (!message) {
     [NSException raise:NSInvalidArgumentException format:@"message cannot be nil"];
   }
@@ -116,7 +116,7 @@
   return [self initWithHandler:nil];
 }
 
-- (instancetype)initWithHandler:(void (^)())handler {
+- (instancetype)initWithHandler:(void (^)(void))handler {
   if (self = [super init]) {
     _op.op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
     _handler = handler;
@@ -271,7 +271,7 @@
   [self startBatchWithOperations:operations errorHandler:nil];
 }
 
-- (void)startBatchWithOperations:(NSArray *)operations errorHandler:(void (^)())errorHandler {
+- (void)startBatchWithOperations:(NSArray *)operations errorHandler:(void (^)(void))errorHandler {
   // Keep logs of op batches when we are running tests. Disabled when in production for improved
   // performance.
 #ifdef GRPC_TEST_OBJC