8026124: JSR-292 bug: java.nio.file.Path.toString cores dump

Summary: catch problem case, assert it matches valid input, new test
Reviewed-by: jrose, twisti, kvn

src/share/vm/interpreter/linkResolver.cpp

 /*
+ * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -158,6 +159,22 @@ CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass) {
     index = vt->index_of_miranda(resolved_method->name(),
                                  resolved_method->signature());
     kind = CallInfo::vtable_call;
+  } else if (resolved_method->has_vtable_index()) {
+    // Can occur if an interface redeclares a method of Object.
+
+#ifdef ASSERT
+    // Ensure that this is really the case.
+    KlassHandle object_klass = SystemDictionary::Object_klass();
+    Method * object_resolved_method = object_klass()->vtable()->method_at(index);
+    assert(object_resolved_method->name() == resolved_method->name(),
+      err_msg("Object and interface method names should match at vtable index %d, %s != %s",
+      index, object_resolved_method->name()->as_C_string(), resolved_method->name()->as_C_string()));
+    assert(object_resolved_method->signature() == resolved_method->signature(),
+      err_msg("Object and interface method signatures should match at vtable index %d, %s != %s",
+      index, object_resolved_method->signature()->as_C_string(), resolved_method->signature()->as_C_string()));
+#endif // ASSERT
+
+    kind = CallInfo::vtable_call;
   } else {
     // A regular interface call.
     kind = CallInfo::itable_call;

test/compiler/jsr292/CreatesInterfaceDotEqualsCallInfo.java

+/*
+ * Copyright (c) 2013, 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 8026124
+ * @summary Javascript file provoked assertion failure in linkResolver.cpp
+ *
+ * @run main/othervm CreatesInterfaceDotEqualsCallInfo
+ */
+
+public class CreatesInterfaceDotEqualsCallInfo {
+  public static void main(String[] args) throws java.io.IOException {
+    String[] jsargs = { System.getProperty("test.src", ".") +
+                        "/createsInterfaceDotEqualsCallInfo.js" };
+    jdk.nashorn.tools.Shell.main(System.in, System.out, System.err, jsargs);
+    System.out.println("PASS, did not crash running Javascript");
+  }
+}

test/compiler/jsr292/createsInterfaceDotEqualsCallInfo.js

+/*
+ * Copyright (c) 2013, 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.
+ *
+ */
+
+var path = new java.io.File("/Users/someone").toPath();
+path.toString();