diff --git a/jdk/src/java.base/share/classes/java/lang/Thread.java b/jdk/src/java.base/share/classes/java/lang/Thread.java
index 54fc27f31b5..310ada1b470 100644
--- a/jdk/src/java.base/share/classes/java/lang/Thread.java
+++ b/jdk/src/java.base/share/classes/java/lang/Thread.java
@@ -340,6 +340,45 @@ class Thread implements Runnable {
         sleep(millis);
     }
 
+    /**
+     * Indicates that the caller is momentarily unable to progress, until the
+     * occurrence of one or more actions on the part of other activities. By
+     * invoking this method within each iteration of a spin-wait loop construct,
+     * the calling thread indicates to the runtime that it is busy-waiting.
+     * The runtime may take action to improve the performance of invoking
+     * spin-wait loop constructions.
+     * <p>
+     * @apiNote
+     * As an example consider a method in a class that spins in a loop until
+     * some flag is set outside of that method. A call to the {@code onSpinWait}
+     * method should be placed inside the spin loop.
+     * <pre>{@code
+     *     class EventHandler {
+     *         volatile boolean eventNotificationNotReceived;
+     *         void waitForEventAndHandleIt() {
+     *             while ( eventNotificationNotReceived ) {
+     *                 java.lang.Thread.onSpinWait();
+     *             }
+     *             readAndProcessEvent();
+     *         }
+     *
+     *         void readAndProcessEvent() {
+     *             // Read event from some source and process it
+     *              . . .
+     *         }
+     *     }
+     * }</pre>
+     * <p>
+     * The code above would remain correct even if the {@code onSpinWait}
+     * method was not called at all. However on some architectures the Java
+     * Virtual Machine may issue the processor instructions to address such
+     * code patterns in a more beneficial way.
+     * <p>
+     * @since 9
+     */
+    @HotSpotIntrinsicCandidate
+    public static void onSpinWait() {}
+
     /**
      * Initializes a Thread with the current AccessControlContext.
      * @see #init(ThreadGroup,Runnable,String,long,AccessControlContext,boolean)
diff --git a/jdk/src/java.base/share/classes/sun/launcher/resources/launcher.properties b/jdk/src/java.base/share/classes/sun/launcher/resources/launcher.properties
index 52d621b414d..f678ba37057 100644
--- a/jdk/src/java.base/share/classes/sun/launcher/resources/launcher.properties
+++ b/jdk/src/java.base/share/classes/sun/launcher/resources/launcher.properties
@@ -99,7 +99,6 @@ java.launcher.X.usage=\
 \    -Xdiag            show additional diagnostic messages\n\
 \    -Xdiag:resolver   show resolver diagnostic messages\n\
 \    -Xnoclassgc       disable class garbage collection\n\
-\    -Xincgc           enable incremental garbage collection\n\
 \    -Xloggc:<file>    log GC status to a file with time stamps\n\
 \    -Xbatch           disable background compilation\n\
 \    -Xms<size>        set initial Java heap size\n\
diff --git a/jdk/src/java.instrument/share/native/libinstrument/InvocationAdapter.c b/jdk/src/java.instrument/share/native/libinstrument/InvocationAdapter.c
index 0c57f8b289d..a74b2b725ba 100644
--- a/jdk/src/java.instrument/share/native/libinstrument/InvocationAdapter.c
+++ b/jdk/src/java.instrument/share/native/libinstrument/InvocationAdapter.c
@@ -518,18 +518,22 @@ static void
 splitPathList(const char* str, int* pathCount, char*** paths) {
     int count = 0;
     char** segments = NULL;
+    char** new_segments;
     char* c = (char*) str;
     while (*c != '\0') {
         while (*c == ' ') c++;          /* skip leading spaces */
         if (*c == '\0') {
             break;
         }
-        if (segments == NULL) {
-            segments = (char**)malloc( sizeof(char**) );
-        } else {
-            segments = (char**)realloc( segments, (count+1)*sizeof(char**) );
+        new_segments = (char**)realloc(segments, (count+1)*sizeof(char*));
+        if (new_segments == NULL) {
+            jplis_assert(0);
+            free(segments);
+            count = 0;
+            segments = NULL;
+            break;
         }
-        jplis_assert(segments != (char**)NULL);
+        segments = new_segments;
         segments[count++] = c;
         c = strchr(c, ' ');
         if (c == NULL) {
diff --git a/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/Commands.java b/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/Commands.java
index bbae8bc44c8..5e6438d887a 100644
--- a/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/Commands.java
+++ b/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/Commands.java
@@ -1534,7 +1534,6 @@ class Commands {
             PathSearchingVirtualMachine vm = (PathSearchingVirtualMachine)Env.vm();
             MessageOutput.println("base directory:", vm.baseDirectory());
             MessageOutput.println("classpath:", vm.classPath().toString());
-            MessageOutput.println("bootclasspath:", vm.bootClassPath().toString());
         } else {
             MessageOutput.println("The VM does not use paths");
         }
diff --git a/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/TTYResources.java b/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/TTYResources.java
index c412743c4b6..39e703d88b8 100644
--- a/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/TTYResources.java
+++ b/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/TTYResources.java
@@ -74,7 +74,6 @@ public class TTYResources extends java.util.ListResourceBundle {
         {"Array element is not a method", "Array element is not a method"},
         {"Array index must be a integer type", "Array index must be a integer type"},
         {"base directory:", "base directory: {0}"},
-        {"bootclasspath:", "bootclasspath: {0}"},
         {"Breakpoint hit:", "Breakpoint hit: "},
         {"breakpoint", "breakpoint {0}"},
         {"Breakpoints set:", "Breakpoints set:"},
diff --git a/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/TTYResources_ja.java b/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/TTYResources_ja.java
index 1cb6d231d50..b3562226398 100644
--- a/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/TTYResources_ja.java
+++ b/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/TTYResources_ja.java
@@ -74,7 +74,6 @@ public class TTYResources_ja extends java.util.ListResourceBundle {
         {"Array element is not a method", "\u914D\u5217\u8981\u7D20\u306F\u30E1\u30BD\u30C3\u30C9\u3067\u306F\u3042\u308A\u307E\u305B\u3093"},
         {"Array index must be a integer type", "\u914D\u5217\u306E\u6DFB\u3048\u5B57\u306F\u6574\u6570\u578B\u3067\u3042\u308B\u5FC5\u8981\u304C\u3042\u308A\u307E\u3059"},
         {"base directory:", "\u30D9\u30FC\u30B9\u30FB\u30C7\u30A3\u30EC\u30AF\u30C8\u30EA: {0}"},
-        {"bootclasspath:", "\u30D6\u30FC\u30C8\u30FB\u30AF\u30E9\u30B9\u30D1\u30B9: {0}"},
         {"Breakpoint hit:", "\u30D2\u30C3\u30C8\u3057\u305F\u30D6\u30EC\u30FC\u30AF\u30DD\u30A4\u30F3\u30C8: "},
         {"breakpoint", "\u30D6\u30EC\u30FC\u30AF\u30DD\u30A4\u30F3\u30C8{0}"},
         {"Breakpoints set:", "\u8A2D\u5B9A\u3055\u308C\u3066\u3044\u308B\u30D6\u30EC\u30FC\u30AF\u30DD\u30A4\u30F3\u30C8:"},
diff --git a/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/TTYResources_zh_CN.java b/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/TTYResources_zh_CN.java
index 50790cb9d72..79dc9268da0 100644
--- a/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/TTYResources_zh_CN.java
+++ b/jdk/src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/TTYResources_zh_CN.java
@@ -74,7 +74,6 @@ public class TTYResources_zh_CN extends java.util.ListResourceBundle {
         {"Array element is not a method", "\u6570\u7EC4\u5143\u7D20\u4E0D\u662F\u65B9\u6CD5"},
         {"Array index must be a integer type", "\u6570\u7EC4\u7D22\u5F15\u5FC5\u987B\u4E3A\u6574\u6570\u7C7B\u578B"},
         {"base directory:", "\u57FA\u76EE\u5F55: {0}"},
-        {"bootclasspath:", "\u5F15\u5BFC\u7C7B\u8DEF\u5F84: {0}"},
         {"Breakpoint hit:", "\u65AD\u70B9\u547D\u4E2D: "},
         {"breakpoint", "\u65AD\u70B9{0}"},
         {"Breakpoints set:", "\u65AD\u70B9\u96C6:"},
diff --git a/jdk/src/jdk.jdi/share/classes/com/sun/tools/jdi/VirtualMachineImpl.java b/jdk/src/jdk.jdi/share/classes/com/sun/tools/jdi/VirtualMachineImpl.java
index 47e743483e3..28c3dfbfa3c 100644
--- a/jdk/src/jdk.jdi/share/classes/com/sun/tools/jdi/VirtualMachineImpl.java
+++ b/jdk/src/jdk.jdi/share/classes/com/sun/tools/jdi/VirtualMachineImpl.java
@@ -1439,7 +1439,7 @@ class VirtualMachineImpl extends MirrorImpl
    }
 
    public List<String> bootClassPath() {
-       return Arrays.asList(getClasspath().bootclasspaths);
+       return Collections.emptyList();
    }
 
    public String baseDirectory() {
diff --git a/jdk/src/jdk.jdwp.agent/share/native/libjdwp/VirtualMachineImpl.c b/jdk/src/jdk.jdwp.agent/share/native/libjdwp/VirtualMachineImpl.c
index 2718ad1e3a4..8e1639c5e2e 100644
--- a/jdk/src/jdk.jdwp.agent/share/native/libjdwp/VirtualMachineImpl.c
+++ b/jdk/src/jdk.jdwp.agent/share/native/libjdwp/VirtualMachineImpl.c
@@ -126,7 +126,7 @@ classesForSignature(PacketInputStream *in, PacketOutputStream *out)
             int writtenCount = 0;
             int i;
 
-            for (i=0; i<classCount; i++) {
+            for (i = 0; i < classCount; i++) {
                 jclass clazz = theClasses[i];
                 jint status = classStatus(clazz);
                 char *candidate_signature = NULL;
@@ -141,7 +141,13 @@ classesForSignature(PacketInputStream *in, PacketOutputStream *out)
 
                 error = classSignature(clazz, &candidate_signature, NULL);
                 if (error != JVMTI_ERROR_NONE) {
-                    break;
+                  // Clazz become invalid since the time we get the class list
+                  // Skip this entry
+                  if (error == JVMTI_ERROR_INVALID_CLASS) {
+                    continue;
+                  }
+
+                  break;
                 }
 
                 if (strcmp(candidate_signature, signature) == 0) {