# HG changeset patch
# User andrew
# Date 1568658991 -3600
#      Mon Sep 16 19:36:31 2019 +0100
# Node ID e2d7de285d766fe5d73e0874f927fe6d4b0130fc
# Parent  a1986eb5d5fdb32f4dec5885ea84dbe5eb5c211e
# Parent  3ece33697a35d2a4bc17f0dcdb3e942fbdb4dd66
Merge jdk8u232-b06

diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -1406,3 +1406,4 @@
 b13d7942036329f64c77a93cffc25e1b52523a3c jdk8u232-b05
 a047aebf12df4c2350f0590f6206bd7a3c60e63f aarch64-shenandoah-jdk8u232-b05
 4eeba56c89849b25b2ffd984e097d6ebd16d538f aarch64-shenandoah-jdk8u232-b05-shenandoah-merge-2019-09-09
+fea2c7f50ce8e6aee1e946eaec7b834193747d82 jdk8u232-b06
diff --git a/THIRD_PARTY_README b/THIRD_PARTY_README
--- a/THIRD_PARTY_README
+++ b/THIRD_PARTY_README
@@ -1470,60 +1470,90 @@
 
 -------------------------------------------------------------------------------
 
-%% This notice is provided with respect to libpng 1.6.35, which may be
+%% This notice is provided with respect to libpng 1.6.37, which may be
 included with JRE 8, JDK 8, and OpenJDK 8.
 
 --- begin of LICENSE ---
 
-This copy of the libpng notices is provided for your convenience.  In case of
-any discrepancy between this copy and the notices in the file png.h that is
-included in the libpng distribution, the latter shall prevail.
-
-COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
-
-If you modify libpng you may insert additional notices immediately following
-this sentence.
-
-This code is released under the libpng license.
-
-libpng versions 1.0.7, July 1, 2000 through 1.6.35, July 15, 2018 are
+COPYRIGHT NOTICE, DISCLAIMER, and LICENSE
+=========================================
+
+PNG Reference Library License version 2
+---------------------------------------
+
+ * Copyright (c) 1995-2019 The PNG Reference Library Authors.
+ * Copyright (c) 2018-2019 Cosmin Truta.
+ * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
+ * Copyright (c) 1996-1997 Andreas Dilger.
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
+
+The software is supplied "as is", without warranty of any kind,
+express or implied, including, without limitation, the warranties
+of merchantability, fitness for a particular purpose, title, and
+non-infringement.  In no event shall the Copyright owners, or
+anyone distributing the software, be liable for any damages or
+other liability, whether in contract, tort or otherwise, arising
+from, out of, or in connection with the software, or the use or
+other dealings in the software, even if advised of the possibility
+of such damage.
+
+Permission is hereby granted to use, copy, modify, and distribute
+this software, or portions hereof, for any purpose, without fee,
+subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you
+    must not claim that you wrote the original software.  If you
+    use this software in a product, an acknowledgment in the product
+    documentation would be appreciated, but is not required.
+
+ 2. Altered source versions must be plainly marked as such, and must
+    not be misrepresented as being the original software.
+
+ 3. This Copyright notice may not be removed or altered from any
+    source or altered source distribution.
+
+
+PNG Reference Library License version 1 (for libpng 0.5 through 1.6.35)
+-----------------------------------------------------------------------
+
+libpng versions 1.0.7, July 1, 2000, through 1.6.35, July 15, 2018 are
 Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson, are
 derived from libpng-1.0.6, and are distributed according to the same
 disclaimer and license as libpng-1.0.6 with the following individuals
 added to the list of Contributing Authors:
 
-   Simon-Pierre Cadieux
-   Eric S. Raymond
-   Mans Rullgard
-   Cosmin Truta
-   Gilles Vollant
-   James Yu
-   Mandar Sahastrabuddhe
-   Google Inc.
-   Vadim Barkov
+    Simon-Pierre Cadieux
+    Eric S. Raymond
+    Mans Rullgard
+    Cosmin Truta
+    Gilles Vollant
+    James Yu
+    Mandar Sahastrabuddhe
+    Google Inc.
+    Vadim Barkov
 
 and with the following additions to the disclaimer:
 
-   There is no warranty against interference with your enjoyment of the
-   library or against infringement.  There is no warranty that our
-   efforts or the library will fulfill any of your particular purposes
-   or needs.  This library is provided with all faults, and the entire
-   risk of satisfactory quality, performance, accuracy, and effort is with
-   the user.
+    There is no warranty against interference with your enjoyment of
+    the library or against infringement.  There is no warranty that our
+    efforts or the library will fulfill any of your particular purposes
+    or needs.  This library is provided with all faults, and the entire
+    risk of satisfactory quality, performance, accuracy, and effort is
+    with the user.
 
 Some files in the "contrib" directory and some configure-generated
-files that are distributed with libpng have other copyright owners and
+files that are distributed with libpng have other copyright owners, and
 are released under other open source licenses.
 
 libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
 Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
 libpng-0.96, and are distributed according to the same disclaimer and
-license as libpng-0.96, with the following individuals added to the list
-of Contributing Authors:
-
-   Tom Lane
-   Glenn Randers-Pehrson
-   Willem van Schaik
+license as libpng-0.96, with the following individuals added to the
+list of Contributing Authors:
+
+    Tom Lane
+    Glenn Randers-Pehrson
+    Willem van Schaik
 
 libpng versions 0.89, June 1996, through 0.96, May 1997, are
 Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,
@@ -1531,14 +1561,14 @@
 libpng-0.88, with the following individuals added to the list of
 Contributing Authors:
 
-   John Bowler
-   Kevin Bracey
-   Sam Bushell
-   Magnus Holmgren
-   Greg Roelofs
-   Tom Tanner
-
-Some files in the "scripts" directory have other copyright owners
+    John Bowler
+    Kevin Bracey
+    Sam Bushell
+    Magnus Holmgren
+    Greg Roelofs
+    Tom Tanner
+
+Some files in the "scripts" directory have other copyright owners,
 but are released under this license.
 
 libpng versions 0.5, May 1995, through 0.88, January 1996, are
@@ -1547,39 +1577,38 @@
 For the purposes of this copyright and license, "Contributing Authors"
 is defined as the following set of individuals:
 
-   Andreas Dilger
-   Dave Martindale
-   Guy Eric Schalnat
-   Paul Schmidt
-   Tim Wegner
-
-The PNG Reference Library is supplied "AS IS".  The Contributing Authors
-and Group 42, Inc. disclaim all warranties, expressed or implied,
-including, without limitation, the warranties of merchantability and of
-fitness for any purpose.  The Contributing Authors and Group 42, Inc.
-assume no liability for direct, indirect, incidental, special, exemplary,
-or consequential damages, which may result from the use of the PNG
-Reference Library, even if advised of the possibility of such damage.
+    Andreas Dilger
+    Dave Martindale
+    Guy Eric Schalnat
+    Paul Schmidt
+    Tim Wegner
+
+The PNG Reference Library is supplied "AS IS".  The Contributing
+Authors and Group 42, Inc. disclaim all warranties, expressed or
+implied, including, without limitation, the warranties of
+merchantability and of fitness for any purpose.  The Contributing
+Authors and Group 42, Inc. assume no liability for direct, indirect,
+incidental, special, exemplary, or consequential damages, which may
+result from the use of the PNG Reference Library, even if advised of
+the possibility of such damage.
 
 Permission is hereby granted to use, copy, modify, and distribute this
 source code, or portions hereof, for any purpose, without fee, subject
 to the following restrictions:
 
-  1. The origin of this source code must not be misrepresented.
-
-  2. Altered versions must be plainly marked as such and must not
-     be misrepresented as being the original source.
-
-  3. This Copyright notice may not be removed or altered from any
-     source or altered source distribution.
-
-The Contributing Authors and Group 42, Inc. specifically permit, without
-fee, and encourage the use of this source code as a component to
-supporting the PNG file format in commercial products.  If you use this
-source code in a product, acknowledgment is not required but would be
-appreciated.
-
-END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE.
+ 1. The origin of this source code must not be misrepresented.
+
+ 2. Altered versions must be plainly marked as such and must not
+    be misrepresented as being the original source.
+
+ 3. This Copyright notice may not be removed or altered from any
+    source or altered source distribution.
+
+The Contributing Authors and Group 42, Inc. specifically permit,
+without fee, and encourage the use of this source code as a component
+to supporting the PNG file format in commercial products.  If you use
+this source code in a product, acknowledgment is not required but would
+be appreciated.
 
 TRADEMARK:
 
diff --git a/src/share/vm/prims/jvmtiRedefineClasses.cpp b/src/share/vm/prims/jvmtiRedefineClasses.cpp
--- a/src/share/vm/prims/jvmtiRedefineClasses.cpp
+++ b/src/share/vm/prims/jvmtiRedefineClasses.cpp
@@ -151,6 +151,11 @@
         ClassLoaderData* cld = _scratch_classes[i]->class_loader_data();
         // Free the memory for this class at class unloading time.  Not before
         // because CMS might think this is still live.
+        InstanceKlass* ik = get_ik(_class_defs[i].klass);
+        if (ik->get_cached_class_file() == ((InstanceKlass*)_scratch_classes[i])->get_cached_class_file()) {
+          // Don't double-free cached_class_file copied from the original class if error.
+          ((InstanceKlass*)_scratch_classes[i])->set_cached_class_file(NULL);
+        }
         cld->add_to_deallocate_list((InstanceKlass*)_scratch_classes[i]);
       }
     }
@@ -4019,12 +4024,12 @@
   // with them was cached on the scratch class, move to the_class.
   // Note: we still want to do this if nothing needed caching since it
   // should get cleared in the_class too.
-  if (the_class->get_cached_class_file_bytes() == 0) {
+  if (the_class->get_cached_class_file() == 0) {
     // the_class doesn't have a cache yet so copy it
     the_class->set_cached_class_file(scratch_class->get_cached_class_file());
   }
-  else if (scratch_class->get_cached_class_file_bytes() !=
-           the_class->get_cached_class_file_bytes()) {
+  else if (scratch_class->get_cached_class_file() !=
+           the_class->get_cached_class_file()) {
     // The same class can be present twice in the scratch classes list or there
     // are multiple concurrent RetransformClasses calls on different threads.
     // In such cases we have to deallocate scratch_class cached_class_file.
diff --git a/test/runtime/RedefineTests/RedefineDoubleDelete.java b/test/runtime/RedefineTests/RedefineDoubleDelete.java
new file mode 100644
--- /dev/null
+++ b/test/runtime/RedefineTests/RedefineDoubleDelete.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2017, 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 8178870
+ * @summary Redefine class with CFLH twice to test deleting the cached_class_file
+ */
+
+public class RedefineDoubleDelete {
+
+    // Class gets a redefinition error because it adds a data member
+    public static String newB =
+                "class RedefineDoubleDelete$B {" +
+                "   int count1 = 0;" +
+                "}";
+
+    public static String newerB =
+                "class RedefineDoubleDelete$B { " +
+                "   int faa() { System.out.println(\"baa\"); return 2; }" +
+                "}";
+
+    // The ClassFileLoadHook for this class turns foo into faa and prints out faa.
+    static class B {
+      int faa() { System.out.println("foo"); return 1; }
+    }
+
+    public static void main(String args[]) throws Exception {
+
+        B b = new B();
+        int val = b.faa();
+        if (val != 1) {
+            throw new RuntimeException("return value wrong " + val);
+        }
+
+        // Redefine B twice to get cached_class_file in both B scratch classes
+        try {
+            RedefineClassHelper.redefineClass(B.class, newB);
+        } catch (java.lang.UnsupportedOperationException e) {
+            // this is expected
+        }
+        try {
+            RedefineClassHelper.redefineClass(B.class, newB);
+        } catch (java.lang.UnsupportedOperationException e) {
+            // this is expected
+        }
+
+        // Do a full GC.
+        System.gc();
+
+        // Redefine with a compatible class
+        RedefineClassHelper.redefineClass(B.class, newerB);
+        val = b.faa();
+        if (val != 2) {
+            throw new RuntimeException("return value wrong " + val);
+        }
+
+        // Do another full GC to clean things up.
+        System.gc();
+    }
+}
diff --git a/test/runtime/RedefineTests/libRedefineDoubleDelete.c b/test/runtime/RedefineTests/libRedefineDoubleDelete.c
new file mode 100644
--- /dev/null
+++ b/test/runtime/RedefineTests/libRedefineDoubleDelete.c
@@ -0,0 +1,164 @@
+/*
+ * Copyright (c) 2017, 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.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include "jvmti.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef JNI_ENV_ARG
+
+#ifdef __cplusplus
+#define JNI_ENV_ARG(x, y) y
+#define JNI_ENV_PTR(x) x
+#else
+#define JNI_ENV_ARG(x,y) x, y
+#define JNI_ENV_PTR(x) (*x)
+#endif
+
+#endif
+
+#define TranslateError(err) "JVMTI error"
+
+static jvmtiEnv *jvmti = NULL;
+
+static jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved);
+
+JNIEXPORT
+jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
+    return Agent_Initialize(jvm, options, reserved);
+}
+
+JNIEXPORT
+jint JNICALL Agent_OnAttach(JavaVM *jvm, char *options, void *reserved) {
+    return Agent_Initialize(jvm, options, reserved);
+}
+
+JNIEXPORT
+jint JNICALL JNI_OnLoad(JavaVM *jvm, void *reserved) {
+    return JNI_VERSION_1_8;
+}
+
+
+static jint newClassDataLen = 0;
+static unsigned char* newClassData = NULL;
+
+static jint
+getBytecodes(jvmtiEnv *jvmti_env,
+             jint class_data_len, const unsigned char* class_data) {
+    int i;
+    jint res;
+
+    newClassDataLen = class_data_len;
+    res = (*jvmti_env)->Allocate(jvmti_env, newClassDataLen, &newClassData);
+    if (res != JNI_OK) {
+        printf("    Unable to allocate bytes\n");
+        return JNI_ERR;
+    }
+    for (i = 0; i < newClassDataLen; i++) {
+        newClassData[i] = class_data[i];
+        // Rewrite oo in class to aa
+        if (i > 0 && class_data[i] == 'o' && class_data[i-1] == 'o') {
+            newClassData[i] = newClassData[i-1] = 'a';
+        }
+    }
+    printf("  ... copied bytecode: %d bytes\n", (int)newClassDataLen);
+    return JNI_OK;
+}
+
+
+static void JNICALL
+Callback_ClassFileLoadHook(jvmtiEnv *jvmti_env, JNIEnv *env,
+                           jclass class_being_redefined,
+                           jobject loader, const char* name, jobject protection_domain,
+                           jint class_data_len, const unsigned char* class_data,
+                           jint *new_class_data_len, unsigned char** new_class_data) {
+    if (name != NULL && strcmp(name, "RedefineDoubleDelete$B") == 0) {
+        if (newClassData == NULL) {
+            jint res = getBytecodes(jvmti_env, class_data_len, class_data);
+            if (res == JNI_ERR) {
+              printf(">>>    ClassFileLoadHook event: class name %s FAILED\n", name);
+              return;
+            }
+            // Only change for first CFLH event.
+            *new_class_data_len = newClassDataLen;
+            *new_class_data = newClassData;
+        }
+        printf(">>>    ClassFileLoadHook event: class name %s\n", name);
+    }
+}
+
+static
+jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
+    jint res, size;
+    jvmtiCapabilities caps;
+    jvmtiEventCallbacks callbacks;
+    jvmtiError err;
+
+    res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),
+        JVMTI_VERSION_1_2);
+    if (res != JNI_OK || jvmti == NULL) {
+        printf("    Error: wrong result of a valid call to GetEnv!\n");
+        return JNI_ERR;
+    }
+
+    printf("Enabling following capabilities: can_generate_all_class_hook_events, "
+           "can_retransform_classes, can_redefine_classes");
+    memset(&caps, 0, sizeof(caps));
+    caps.can_generate_all_class_hook_events = 1;
+    caps.can_retransform_classes = 1;
+    caps.can_redefine_classes = 1;
+    printf("\n");
+
+    err = (*jvmti)->AddCapabilities(jvmti, &caps);
+    if (err != JVMTI_ERROR_NONE) {
+        printf("    Error in AddCapabilites: %s (%d)\n", TranslateError(err), err);
+        return JNI_ERR;
+    }
+
+    size = (jint)sizeof(callbacks);
+
+    memset(&callbacks, 0, sizeof(callbacks));
+    callbacks.ClassFileLoadHook = Callback_ClassFileLoadHook;
+
+    err = (*jvmti)->SetEventCallbacks(jvmti, &callbacks, size);
+    if (err != JVMTI_ERROR_NONE) {
+        printf("    Error in SetEventCallbacks: %s (%d)\n", TranslateError(err), err);
+        return JNI_ERR;
+    }
+
+    err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, NULL);
+    if (err != JVMTI_ERROR_NONE) {
+        printf("    Error in SetEventNotificationMode: %s (%d)\n", TranslateError(err), err);
+        return JNI_ERR;
+    }
+
+    return JNI_OK;
+}
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/test/runtime/RedefineTests/test8178870.sh b/test/runtime/RedefineTests/test8178870.sh
new file mode 100644
--- /dev/null
+++ b/test/runtime/RedefineTests/test8178870.sh
@@ -0,0 +1,87 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2019, Red Hat, Inc. All rights reserved.
+#
+# 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 test.sh
+## @bug 8178870
+## @summary test instrumentation.retransformClasses
+## @run shell test.sh
+
+if [ "${TESTSRC}" = "" ]
+then
+  TESTSRC=${PWD}
+  echo "TESTSRC not set.  Using "${TESTSRC}" as default"
+fi
+echo "TESTSRC=${TESTSRC}"
+## Adding common setup Variables for running shell tests.
+. ${TESTSRC}/../../test_env.sh
+
+LIB_SRC=${TESTSRC}/../../testlibrary/
+
+# set platform-dependent variables
+OS=`uname -s`
+echo "Testing on " $OS
+case "$OS" in
+  Linux)
+    cc_cmd=`which gcc`
+    if [ "x$cc_cmd" == "x" ]; then
+        echo "WARNING: gcc not found. Cannot execute test." 2>&1
+        exit 0;
+    fi
+    ;;
+  Solaris)
+    cc_cmd=`which cc`
+    if [ "x$cc_cmd" == "x" ]; then
+        echo "WARNING: cc not found. Cannot execute test." 2>&1
+        exit 0;
+    fi
+    ;;
+  *)
+    echo "Test passed. Only on Linux and Solaris"
+    exit 0;
+    ;;
+esac
+
+THIS_DIR=.
+
+cp ${TESTSRC}/RedefineDoubleDelete.java ${THIS_DIR}
+mkdir -p ${THIS_DIR}/classes
+${TESTJAVA}/bin/javac -sourcepath  ${LIB_SRC} -d ${THIS_DIR}/classes ${LIB_SRC}RedefineClassHelper.java
+${TESTJAVA}/bin/javac -cp .:${THIS_DIR}/classes:${TESTJAVA}/lib/tools.jar -d ${THIS_DIR} RedefineDoubleDelete.java
+
+$cc_cmd -fPIC -shared -o ${THIS_DIR}${FS}libRedefineDoubleDelete.so \
+    -I${TESTJAVA}/include -I${TESTJAVA}/include/linux \
+    ${TESTSRC}/libRedefineDoubleDelete.c
+
+LD_LIBRARY_PATH=${THIS_DIR}
+echo   LD_LIBRARY_PATH = ${LD_LIBRARY_PATH}
+export LD_LIBRARY_PATH
+
+# Install redefineagent.jar
+${TESTJAVA}/bin${FS}java -cp ${THIS_DIR}/classes RedefineClassHelper
+
+echo
+echo ${TESTJAVA}/bin/java -agentlib:RedefineDoubleDelete RedefineDoubleDelete
+${TESTJAVA}/bin/java -cp .:${THIS_DIR}${FS}classes -javaagent:redefineagent.jar -agentlib:RedefineDoubleDelete RedefineDoubleDelete
+