message: Add more temporary debugging code for rdar://problem/52062631
diff: @@ -57,12 +57,13 @@ protected:
  std::unique_ptr<SocketType> listen_socket_up(
  new SocketType(true, child_processes_inherit));
  std::string empty;
  - const char *err = error.AsCString("");
  - EXPECT_EQ(empty, err ? std::string(err) : "");
  EXPECT_FALSE(error.Fail());
  error = listen_socket_up->Listen(listen_remote_address, 5);
  - err = error.AsCString("");
  + // DEBUGGING for rdar://problem/52062631
  + const char *err = error.AsCString("");
  + llvm::errs()<<"listen_remote_address"<<"\n";
  EXPECT_EQ(empty, err ? std::string(err) : "");
  + // END
  EXPECT_FALSE(error.Fail());
  EXPECT_TRUE(listen_socket_up->IsValid());
  @@ -75,30 +76,18 @@ protected:
  std::string connect_remote_address = get_connect_addr(*listen_socket_up);
  std::unique_ptr<SocketType> connect_socket_up(
  new SocketType(true, child_processes_inherit));
  - err = error.AsCString("");
  - EXPECT_EQ(empty, err ? std::string(err) : "");
  EXPECT_FALSE(error.Fail());
  error = connect_socket_up->Connect(connect_remote_address);
  - err = error.AsCString("");
  - EXPECT_EQ(empty, err ? std::string(err) : "");
  EXPECT_FALSE(error.Fail());
  EXPECT_TRUE(connect_socket_up->IsValid());
  a_up->swap(connect_socket_up);
  - err = error.AsCString("");
  - EXPECT_EQ(empty, err ? std::string(err) : "");
  EXPECT_TRUE(error.Success());
  - err = error.AsCString("");
  - EXPECT_EQ(empty, err ? std::string(err) : "");
  EXPECT_TRUE((*a_up)->IsValid());
  accept_thread.join();
  b_up->reset(static_cast<SocketType *>(accept_socket));
  - err = error.AsCString("");
  - EXPECT_EQ(empty, err ? std::string(err) : "");
  EXPECT_TRUE(accept_error.Success());
  - err = error.AsCString("");
  - EXPECT_EQ(empty, err ? std::string(err) : "");
  EXPECT_TRUE((*b_up)->IsValid());
  listen_socket_up.reset();
  @@ -177,6 +166,9 @@ TEST_F(SocketTest, DomainListenConnectAccept) {
  std::error_code EC = llvm::sys::fs::createUniqueDirectory("DomainListenConnectAccept", Path);
  ASSERT_FALSE(EC);
  llvm::sys::path::append(Path, "test");
  + // DEBUGGING for rdar://problem/52062631
  + llvm::errs()<<"Path = \""<<Path<<"\", Length = "<<Path.size()<<"\n";
  + // END DEBUGGING for rdar://problem/52062631
  std::unique_ptr<DomainSocket> socket_a_up;
  std::unique_ptr<DomainSocket> socket_b_up;
  