Merge IO v2 branch to bleeding edge

runtime/bin/socket_macos.cc

Index: runtime/bin/socket_macos.cc
diff --git a/runtime/bin/socket_macos.cc b/runtime/bin/socket_macos.cc
index 06422c4aba728dac753e0b6d0a999855ace261c5..50ad16ffaa1209564a1e3f1b9f079f569f6c9410 100644
--- a/runtime/bin/socket_macos.cc
+++ b/runtime/bin/socket_macos.cc
@@ -200,10 +200,7 @@ intptr_t ServerSocket::CreateBindListen(const char* host,
   }
 
   fd = TEMP_FAILURE_RETRY(socket(AF_INET, SOCK_STREAM, 0));
-  if (fd < 0) {
-    Log::PrintErr("Error CreateBind: %s\n", strerror(errno));
-    return -1;
-  }
+  if (fd < 0) return -1;
 
   FDUtils::SetCloseOnExec(fd);
 
@@ -221,12 +218,11 @@ intptr_t ServerSocket::CreateBindListen(const char* host,
                reinterpret_cast<struct sockaddr *>(&server_address),
                sizeof(server_address))) < 0) {
     VOID_TEMP_FAILURE_RETRY(close(fd));
-    Log::PrintErr("Error Bind: %s\n", strerror(errno));
     return -1;
   }
 
-  if (TEMP_FAILURE_RETRY(listen(fd, backlog)) != 0) {
-    Log::PrintErr("Error Listen: %s\n", strerror(errno));
+  if (TEMP_FAILURE_RETRY(listen(fd, backlog > 0 ? backlog : SOMAXCONN)) != 0) {
+    TEMP_FAILURE_RETRY(close(fd));
     return -1;
   }