8098807: Strict eval throws ClassCastException with large scripts

Reviewed-by: sundar, attila

nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/Compiler.java

@@ -103,7 +103,7 @@ public final class Compiler implements Loggable {
 
     private final CodeInstaller<ScriptEnvironment> installer;
 
-    /** logger for compiler, trampolines, splits and related code generation events
+    /** logger for compiler, trampolines and related code generation events
      *  that affect classes */
     private final DebugLogger log;
 

nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/Splitter.java

@@ -42,13 +42,17 @@ import jdk.nashorn.internal.ir.Node;
 import jdk.nashorn.internal.ir.SplitNode;
 import jdk.nashorn.internal.ir.Statement;
 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
+import jdk.nashorn.internal.runtime.Context;
 import jdk.nashorn.internal.runtime.logging.DebugLogger;
+import jdk.nashorn.internal.runtime.logging.Loggable;
+import jdk.nashorn.internal.runtime.logging.Logger;
 import jdk.nashorn.internal.runtime.options.Options;
 
 /**
  * Split the IR into smaller compile units.
  */
-final class Splitter extends NodeVisitor<LexicalContext> {
+@Logger(name="splitter")
+final class Splitter extends NodeVisitor<LexicalContext> implements Loggable {
     /** Current compiler. */
     private final Compiler compiler;
 
@@ -78,7 +82,17 @@ final class Splitter extends NodeVisitor<LexicalContext> {
         this.compiler             = compiler;
         this.outermost            = functionNode;
         this.outermostCompileUnit = outermostCompileUnit;
-        this.log                  = compiler.getLogger();
+        this.log                  = initLogger(compiler.getContext());
+    }
+
+    @Override
+    public DebugLogger initLogger(final Context context) {
+        return context.getLogger(this.getClass());
+    }
+
+    @Override
+    public DebugLogger getLogger() {
+        return log;
     }
 
     /**
@@ -89,7 +103,7 @@ final class Splitter extends NodeVisitor<LexicalContext> {
     FunctionNode split(final FunctionNode fn, final boolean top) {
         FunctionNode functionNode = fn;
 
-        log.finest("Initiating split of '", functionNode.getName(), "'");
+        log.fine("Initiating split of '", functionNode.getName(), "'");
 
         long weight = WeighNodes.weigh(functionNode);
 
@@ -98,7 +112,7 @@ final class Splitter extends NodeVisitor<LexicalContext> {
         assert lc.isEmpty() : "LexicalContext not empty";
 
         if (weight >= SPLIT_THRESHOLD) {
-            log.finest("Splitting '", functionNode.getName(), "' as its weight ", weight, " exceeds split threshold ", SPLIT_THRESHOLD);
+            log.info("Splitting '", functionNode.getName(), "' as its weight ", weight, " exceeds split threshold ", SPLIT_THRESHOLD);
             functionNode = (FunctionNode)functionNode.accept(this);
 
             if (functionNode.isSplit()) {

nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/Context.java

@@ -724,16 +724,8 @@ public final class Context {
         // In strict mode, eval does not instantiate variables and functions
         // in the caller's environment. A new environment is created!
         if (strictFlag) {
-            // Create a new scope object
-            final ScriptObject strictEvalScope = global.newObject();
-
-            // bless it as a "scope"
-            strictEvalScope.setIsScope();
-
-            // set given scope to be it's proto so that eval can still
-            // access caller environment vars in the new environment.
-            strictEvalScope.setProto(scope);
-            scope = strictEvalScope;
+            // Create a new scope object with given scope as its prototype
+            scope = newScope(scope);
         }
 
         final ScriptFunction func = getProgramFunction(clazz, scope);
@@ -748,6 +740,10 @@ public final class Context {
         return ScriptRuntime.apply(func, evalThis);
     }
 
+    private static ScriptObject newScope(final ScriptObject callerScope) {
+        return new FunctionScope(PropertyMap.newMap(FunctionScope.class), callerScope);
+    }
+
     private static Source loadInternal(final String srcStr, final String prefix, final String resourcePath) {
         if (srcStr.startsWith(prefix)) {
             final String resource = resourcePath + srcStr.substring(prefix.length());

nashorn/test/script/basic/JDK-8098807-payload.js

@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2015, 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.
+ */
+
+/**
+ * JDK-8098807:  Strict eval throws ClassCastException with large scripts
+ *
+ * @subtest
+ */
+
+function f() {}
+
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
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+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
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+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
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+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
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+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();
+f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f(); f();

nashorn/test/script/basic/JDK-8098807.js

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2015, 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.
+ */
+
+/**
+ * JDK-8098807:  Strict eval throws ClassCastException with large scripts
+ *
+ * @test
+ * @run
+ * @option -scripting
+ */
+
+"use strict";
+
+var path = __DIR__ + "JDK-8098807-payload.js"
+var source = readFully(path);
+eval(source);