diff -r 000000000000 -r 9a66ca7c79fa test/tools/javac/api/6471599/Main.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/api/6471599/Main.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug     6471599
+ * @summary Type of rhs cannot be obtained when assigning to erroneous symbol
+ * @author  Peter von der Ah\u00e9
+ * @compile Main.java
+ * @run main Main
+ */
+
+import com.sun.source.tree.AssignmentTree;
+import com.sun.source.tree.CompilationUnitTree;
+import com.sun.source.util.JavacTask;
+import com.sun.source.util.TreePath;
+import com.sun.source.util.TreePathScanner;
+import com.sun.source.util.Trees;
+import com.sun.tools.javac.util.List;
+import java.io.IOException;
+import java.net.URI;
+import javax.lang.model.type.TypeKind;
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileObject;
+import javax.tools.SimpleJavaFileObject;
+import javax.tools.ToolProvider;
+
+public class Main {
+    static class MyFileObject extends SimpleJavaFileObject {
+        public MyFileObject() {
+            super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
+        }
+        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
+            return "public class Test { { x = java.util.Collections.emptySet(); } }";
+        }
+    }
+    static Trees trees;
+    public static void main(String[] args) throws IOException {
+        JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
+        JavacTask task = (JavacTask) compiler.getTask(null, null, null, null, null, List.of(new MyFileObject()));
+        trees = Trees.instance(task);
+        Iterable<? extends CompilationUnitTree> asts = task.parse();
+        task.analyze();
+        for (CompilationUnitTree ast : asts) {
+            new MyVisitor().scan(ast, null);
+        }
+    }
+
+    static class MyVisitor extends TreePathScanner<Void,Void> {
+        @Override
+        public Void visitAssignment(AssignmentTree node, Void ignored) {
+            TreePath path = TreePath.getPath(getCurrentPath(), node.getExpression());
+            if (trees.getTypeMirror(path).getKind() == TypeKind.ERROR)
+                throw new AssertionError(path.getLeaf());
+            return null;
+        }
+
+    }
+}