8298425: System.console().readLine() hangs in jshell

Reviewed-by: naoto, alanb

src/jdk.jshell/share/classes/jdk/jshell/execution/JdiDefaultExecutionControl.java

@@ -48,6 +48,7 @@ import com.sun.jdi.StackFrame;
 import com.sun.jdi.ThreadReference;
 import com.sun.jdi.VMDisconnectedException;
 import com.sun.jdi.VirtualMachine;
+import java.util.stream.Stream;
 import jdk.jshell.spi.ExecutionControl;
 import jdk.jshell.spi.ExecutionEnv;
 import static jdk.jshell.execution.Util.remoteInputOutput;
@@ -96,10 +97,15 @@ public class JdiDefaultExecutionControl extends JdiExecutionControl {
             // timeout on I/O-socket
             listener.setSoTimeout(timeout);
             int port = listener.getLocalPort();
+            List<String> augmentedremoteVMOptions =
+                    Stream.concat(env.extraRemoteVMOptions().stream(),
+                                  //disable System.console():
+                                  List.of("-Djdk.console=java.base").stream())
+                          .toList();
 
             // Set-up the JDI connection
             JdiInitiator jdii = new JdiInitiator(port,
-                    env.extraRemoteVMOptions(), remoteAgent, isLaunch, host,
+                    augmentedremoteVMOptions, remoteAgent, isLaunch, host,
                     timeout, Collections.emptyMap());
             VirtualMachine vm = jdii.vm();
             Process process = jdii.process();

test/langtools/jdk/jshell/ConsoleTest.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8298425
+ * @summary Verify behavior of System.console()
+ * @build KullaTesting TestingInputStream
+ * @run testng ConsoleTest
+ */
+
+
+import org.testng.annotations.Test;
+
+public class ConsoleTest extends KullaTesting {
+
+    @Test
+    public void testConsole1() {
+        assertEval("System.console()", "null");
+    }
+
+}