6840059: regression: javac silently crashes when resolving erroneous anonymous inner constructor

Summary: resolved an internal crash with constructor resolution
Reviewed-by: jjg

src/share/classes/com/sun/tools/javac/comp/Attr.java

@@ -1554,13 +1554,18 @@ public class Attr extends JCTree.Visitor {
                     typeargtypes, true, tree.varargsElement != null);
                 assert sym.kind < AMBIGUOUS || tree.constructor.type.isErroneous();
                 tree.constructor = sym;
-                tree.constructorType = checkMethod(clazztype,
-                                            tree.constructor,
-                                            localEnv,
-                                            tree.args,
-                                            argtypes,
-                                            typeargtypes,
-                                            localEnv.info.varArgs);
+                if (tree.constructor.kind > ERRONEOUS) {
+                    tree.constructorType =  syms.errType;
+                }
+                else {
+                    tree.constructorType = checkMethod(clazztype,
+                            tree.constructor,
+                            localEnv,
+                            tree.args,
+                            argtypes,
+                            typeargtypes,
+                            localEnv.info.varArgs);
+                }
             }
 
             if (tree.constructor != null && tree.constructor.kind == MTH)

test/tools/javac/6840059/T6840059.java

+/*
+ * Copyright 2009 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 6840059
+ * @summary 6758789: Some method resolution diagnostic should be improved
+ * @author Maurizio Cimadamore
+ *
+ * @compile/fail/ref=T6840059.out -XDrawDiagnostics T6840059.java
+ */
+
+class T6840059 {
+
+    T6840059(Integer x) {}
+
+    void test() {
+        new T6840059(""){};
+    }
+}

test/tools/javac/6840059/T6840059.out

+T6840059.java:38:9: compiler.err.cant.resolve.location.args: kindname.constructor, T6840059, , java.lang.String, kindname.class, T6840059
+T6840059.java:38:25: compiler.err.cant.resolve.location.args: kindname.constructor, T6840059, , , kindname.class, T6840059
+2 errors