diff --git a/src/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java b/src/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java
index 18cc85d1bbef20f8f815840496f1dda0958c8b52..1253f872d5080dc52bd9a7a20b2b89bf6219dc58 100644
--- a/src/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java
+++ b/src/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java
@@ -1179,12 +1179,14 @@ public class LambdaToMethod extends TreeTranslator {
@Override
public void visitClassDef(JCClassDecl tree) {
List prevStack = frameStack;
+ int prevLambdaCount = lambdaCount;
SyntheticMethodNameCounter prevSyntheticMethodNameCounts =
syntheticMethodNameCounts;
Map prevClinits = clinits;
DiagnosticSource prevSource = log.currentSource();
try {
log.useSource(tree.sym.sourcefile);
+ lambdaCount = 0;
syntheticMethodNameCounts = new SyntheticMethodNameCounter();
prevClinits = new HashMap();
if (tree.sym.owner.kind == MTH) {
@@ -1211,6 +1213,7 @@ public class LambdaToMethod extends TreeTranslator {
finally {
log.useSource(prevSource.getFile());
frameStack = prevStack;
+ lambdaCount = prevLambdaCount;
syntheticMethodNameCounts = prevSyntheticMethodNameCounts;
clinits = prevClinits;
}
diff --git a/test/tools/javac/lambda/lambdaNaming/TestNonSerializableLambdaNameStability.java b/test/tools/javac/lambda/lambdaNaming/TestNonSerializableLambdaNameStability.java
new file mode 100644
index 0000000000000000000000000000000000000000..cda7c9dfcb671ef08134e54e1beed82014644b55
--- /dev/null
+++ b/test/tools/javac/lambda/lambdaNaming/TestNonSerializableLambdaNameStability.java
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2014, 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 8067422
+ * @summary Check that the lambda names are not unnecessarily unstable
+ * @run main TestNonSerializableLambdaNameStability
+ */
+
+import com.sun.tools.classfile.ClassFile;
+import com.sun.tools.classfile.Method;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.tools.FileObject;
+import javax.tools.ForwardingJavaFileManager;
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileManager;
+import javax.tools.JavaFileObject;
+import javax.tools.JavaFileObject.Kind;
+import javax.tools.SimpleJavaFileObject;
+import javax.tools.ToolProvider;
+
+public class TestNonSerializableLambdaNameStability {
+
+ public static void main(String... args) throws Exception {
+ new TestNonSerializableLambdaNameStability().run();
+ }
+
+ String lambdaSource = "public class L%d {\n" +
+ " public static class A {\n" +
+ " private Runnable r = () -> { };\n" +
+ " }\n" +
+ " public static class B {\n" +
+ " private Runnable r = () -> { };\n" +
+ " }\n" +
+ " private Runnable r = () -> { };\n" +
+ "}\n";
+
+ String expectedLambdaMethodName = "lambda$new$0";
+
+ void run() throws Exception {
+ List sources = new ArrayList<>();
+
+ for (int i = 0; i < 3; i++) {
+ sources.add(new SourceJavaFileObject("L" + i, String.format(lambdaSource, i)));
+ }
+
+ JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
+
+ try (MemoryFileManager fm = new MemoryFileManager(compiler.getStandardFileManager(null, null, null))) {
+ if (!compiler.getTask(null, fm, null, null, null, sources).call()) {
+ throw new AssertionError("Compilation failed!");
+ }
+
+ for (String file : fm.name2Content.keySet()) {
+ byte[] fileBytes = fm.name2Content.get(file);
+ try (InputStream in = new ByteArrayInputStream(fileBytes)) {
+ boolean foundLambdaMethod = false;
+ ClassFile cf = ClassFile.read(in);
+ StringBuilder seenMethods = new StringBuilder();
+ String sep = "";
+ for (Method m : cf.methods) {
+ String methodName = m.getName(cf.constant_pool);
+ if (expectedLambdaMethodName.equals(methodName)) {
+ foundLambdaMethod = true;
+ break;
+ }
+ seenMethods.append(sep);
+ seenMethods.append(methodName);
+ sep = ", ";
+ }
+
+ if (!foundLambdaMethod) {
+ throw new AbstractMethodError("Did not find the lambda method, " +
+ "found methods: " + seenMethods.toString());
+ }
+ }
+ }
+ }
+ }
+
+ class MemoryFileManager extends ForwardingJavaFileManager {
+
+ final Map name2Content = new HashMap<>();
+
+ public MemoryFileManager(JavaFileManager fileManager) {
+ super(fileManager);
+ }
+
+ @Override
+ public JavaFileObject getJavaFileForOutput(Location location, String className, Kind kind, FileObject sibling) throws IOException {
+ try {
+ return new SimpleJavaFileObject(new URI("mem://" + className.replace('.', '/') + kind.extension), kind) {
+ @Override public OutputStream openOutputStream() throws IOException {
+ return new ByteArrayOutputStream() {
+ @Override public void close() throws IOException {
+ super.close();
+ name2Content.put(className, toByteArray());
+ }
+ };
+ }
+ };
+ } catch (URISyntaxException ex) {
+ throw new AssertionError(ex);
+ }
+ }
+
+ }
+
+ class SourceJavaFileObject extends SimpleJavaFileObject {
+
+ private final String code;
+
+ public SourceJavaFileObject(String name, String code) throws URISyntaxException {
+ super(new URI("mem:///" + name + ".java"), Kind.SOURCE);
+ this.code = code;
+ }
+
+ @Override
+ public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
+ return code;
+ }
+
+ }
+}