diff -r 4a1c57a1c410 -r c002fdee76fd src/share/classes/com/sun/tools/javac/comp/MemberEnter.java
--- a/src/share/classes/com/sun/tools/javac/comp/MemberEnter.java	Tue Oct 23 13:58:56 2012 -0700
+++ b/src/share/classes/com/sun/tools/javac/comp/MemberEnter.java	Thu Oct 25 11:09:36 2012 -0700
@@ -42,7 +42,9 @@
 import static com.sun.tools.javac.code.Flags.*;
 import static com.sun.tools.javac.code.Flags.ANNOTATION;
 import static com.sun.tools.javac.code.Kinds.*;
-import static com.sun.tools.javac.code.TypeTags.*;
+import static com.sun.tools.javac.code.TypeTag.CLASS;
+import static com.sun.tools.javac.code.TypeTag.ERROR;
+import static com.sun.tools.javac.code.TypeTag.TYPEVAR;
 import static com.sun.tools.javac.tree.JCTree.Tag.*;
 import com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag;
 import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
@@ -370,7 +372,7 @@
         ListBuffer<Type> thrownbuf = new ListBuffer<Type>();
         for (List<JCExpression> l = thrown; l.nonEmpty(); l = l.tail) {
             Type exc = attr.attribType(l.head, env);
-            if (exc.tag != TYPEVAR)
+            if (!exc.hasTag(TYPEVAR))
                 exc = chk.checkClassType(l.head.pos(), exc);
             thrownbuf.append(exc);
         }
@@ -921,7 +923,7 @@
             }
             for (JCExpression iface : interfaceTrees) {
                 Type i = attr.attribBase(iface, baseEnv, false, true, true);
-                if (i.tag == CLASS) {
+                if (i.hasTag(CLASS)) {
                     interfaces.append(i);
                     if (all_interfaces != null) all_interfaces.append(i);
                     chk.checkNotRepeated(iface.pos(), types.erasure(i), interfaceSet);
@@ -1006,7 +1008,7 @@
                     new VarSymbol(FINAL | HASINIT, names._this, c.type, c);
                 thisSym.pos = Position.FIRSTPOS;
                 env.info.scope.enter(thisSym);
-                if (ct.supertype_field.tag == CLASS) {
+                if (ct.supertype_field.hasTag(CLASS)) {
                     VarSymbol superSym =
                         new VarSymbol(FINAL | HASINIT, names._super,
                                       ct.supertype_field, c);
@@ -1094,7 +1096,7 @@
     }
 
     Type modelMissingTypes(Type t, final JCExpression tree, final boolean interfaceExpected) {
-        if (t.tag != ERROR)
+        if (!t.hasTag(ERROR))
             return t;
 
         return new ErrorType(((ErrorType) t).getOriginalType(), t.tsym) {
@@ -1139,7 +1141,7 @@
 
         @Override
         public void visitIdent(JCIdent tree) {
-            if (tree.type.tag != ERROR) {
+            if (!tree.type.hasTag(ERROR)) {
                 result = tree.type;
             } else {
                 result = synthesizeClass(tree.name, syms.unnamedPackage).type;
@@ -1148,7 +1150,7 @@
 
         @Override
         public void visitSelect(JCFieldAccess tree) {
-            if (tree.type.tag != ERROR) {
+            if (!tree.type.hasTag(ERROR)) {
                 result = tree.type;
             } else {
                 Type selectedType;
@@ -1166,7 +1168,7 @@
 
         @Override
         public void visitTypeApply(JCTypeApply tree) {
-            if (tree.type.tag != ERROR) {
+            if (!tree.type.hasTag(ERROR)) {
                 result = tree.type;
             } else {
                 ClassType clazzType = (ClassType) visit(tree.clazz);