changeset 3381:56b8da5c4eaf

8043893: Inference doesn't report error on incompatible upper bounds Summary: Failure on type-equality check during incorporation doesn't trigger inference error Reviewed-by: vromero
author mcimadamore
date Thu, 05 Jun 2014 12:21:38 +0100
parents b21c359c1fd1
children fe32d75d4d4f
files src/share/classes/com/sun/tools/javac/comp/Infer.java test/tools/javac/generics/inference/8043893/T8043893.java test/tools/javac/generics/inference/8043893/T8043893.out test/tools/javac/generics/inference/EagerReturnTypeResolution/EagerReturnTypeResolutionTestb.out
diffstat 4 files changed, 87 insertions(+), 29 deletions(-) [+]
line wrap: on
line diff
--- a/src/share/classes/com/sun/tools/javac/comp/Infer.java	Wed Jun 04 20:01:13 2014 +0100
+++ b/src/share/classes/com/sun/tools/javac/comp/Infer.java	Thu Jun 05 12:21:38 2014 +0100
@@ -344,8 +344,10 @@
     }
 
     private boolean commonSuperWithDiffParameterization(Type t, Type s) {
-        Pair<Type, Type> supers = getParameterizedSupers(t, s);
-        return (supers != null && !types.isSameType(supers.fst, supers.snd));
+        for (Pair<Type, Type> supers : getParameterizedSupers(t, s)) {
+            if (!types.isSameType(supers.fst, supers.snd)) return true;
+        }
+        return false;
     }
 
     private Type generateReferenceToTargetConstraint(JCTree tree, UndetVar from,
@@ -604,30 +606,38 @@
     /** max number of incorporation rounds */
         static final int MAX_INCORPORATION_STEPS = 100;
 
-    /* If for two types t and s there is a least upper bound that is a
-     * parameterized type G, then there exists a supertype of 't' of the form
-     * G<T1, ..., Tn> and a supertype of 's' of the form G<S1, ..., Sn>
-     * which will be returned by this method. If no such supertypes exists then
-     * null is returned.
+    /* If for two types t and s there is a least upper bound that contains
+     * parameterized types G1, G2 ... Gn, then there exists supertypes of 't' of the form
+     * G1<T1, ..., Tn>, G2<T1, ..., Tn>, ... Gn<T1, ..., Tn> and supertypes of 's' of the form
+     * G1<S1, ..., Sn>, G2<S1, ..., Sn>, ... Gn<S1, ..., Sn> which will be returned by this method.
+     * If no such common supertypes exists then an empty list is returned.
      *
      * As an example for the following input:
      *
      * t = java.util.ArrayList<java.lang.String>
      * s = java.util.List<T>
      *
-     * we get this ouput:
+     * we get this ouput (singleton list):
      *
-     * Pair[java.util.List<java.lang.String>,java.util.List<T>]
+     * [Pair[java.util.List<java.lang.String>,java.util.List<T>]]
      */
-    private Pair<Type, Type> getParameterizedSupers(Type t, Type s) {
+    private List<Pair<Type, Type>> getParameterizedSupers(Type t, Type s) {
         Type lubResult = types.lub(t, s);
-        if (lubResult == syms.errType || lubResult == syms.botType ||
-                !lubResult.isParameterized()) {
-            return null;
+        if (lubResult == syms.errType || lubResult == syms.botType) {
+            return List.nil();
         }
-        Type asSuperOfT = types.asSuper(t, lubResult.tsym);
-        Type asSuperOfS = types.asSuper(s, lubResult.tsym);
-        return new Pair<>(asSuperOfT, asSuperOfS);
+        List<Type> supertypesToCheck = lubResult.isCompound() ?
+                ((IntersectionClassType)lubResult).getComponents() :
+                List.of(lubResult);
+        ListBuffer<Pair<Type, Type>> commonSupertypes = new ListBuffer<>();
+        for (Type sup : supertypesToCheck) {
+            if (sup.isParameterized()) {
+                Type asSuperOfT = types.asSuper(t, sup.tsym);
+                Type asSuperOfS = types.asSuper(s, sup.tsym);
+                commonSupertypes.add(new Pair<>(asSuperOfT, asSuperOfS));
+            }
+        }
+        return commonSupertypes.toList();
     }
 
     /**
@@ -813,16 +823,17 @@
                         Type b1 = boundList.head;
                         Type b2 = tmpTail.head;
                         if (b1 != b2) {
-                            Pair<Type, Type> commonSupers = infer.getParameterizedSupers(b1, b2);
-                            if (commonSupers != null) {
+                            for (Pair<Type, Type> commonSupers : infer.getParameterizedSupers(b1, b2)) {
                                 List<Type> allParamsSuperBound1 = commonSupers.fst.allparams();
                                 List<Type> allParamsSuperBound2 = commonSupers.snd.allparams();
                                 while (allParamsSuperBound1.nonEmpty() && allParamsSuperBound2.nonEmpty()) {
                                     //traverse the list of all params comparing them
                                     if (!allParamsSuperBound1.head.hasTag(WILDCARD) &&
                                         !allParamsSuperBound2.head.hasTag(WILDCARD)) {
-                                        isSameType(inferenceContext.asUndetVar(allParamsSuperBound1.head),
-                                            inferenceContext.asUndetVar(allParamsSuperBound2.head), infer);
+                                        if (!isSameType(inferenceContext.asUndetVar(allParamsSuperBound1.head),
+                                            inferenceContext.asUndetVar(allParamsSuperBound2.head), infer)) {
+                                            infer.reportBoundError(uv, BoundErrorKind.BAD_UPPER);
+                                        }
                                     }
                                     allParamsSuperBound1 = allParamsSuperBound1.tail;
                                     allParamsSuperBound2 = allParamsSuperBound2.tail;
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/generics/inference/8043893/T8043893.java	Thu Jun 05 12:21:38 2014 +0100
@@ -0,0 +1,43 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8043893
+ * @summary Inference doesn't report error on incompatible upper bounds
+ *
+ * @compile -source 7 T8043893.java
+ * @compile/fail/ref=T8043893.out -Xlint:-options -XDrawDiagnostics -source 8 T8043893.java
+ */
+
+class T8043893<X> {
+
+    interface S1<U> { }
+
+    interface S2<U> { }
+
+    interface T0 { }
+
+    interface T1 extends S1<Number>, S2<Number> { }
+
+    interface T2 extends S1<Integer>, S2<Integer> { }
+
+    interface T3 extends S1<Number>, S2<Integer> { }
+
+    interface T4 extends S1<Number> { }
+
+    interface T5 extends S1<Integer> { }
+
+    <Z extends T1> void m_intersection(T8043893<? super Z> a) { }
+
+    <Z extends T4> void m_class(T8043893<? super Z> a) { }
+
+    void test() {
+        //intersection type checks
+        m_intersection(new T8043893<T1>()); //ok in both 7 and 8 - Z = T1
+        m_intersection(new T8043893<T2>()); //ok in 7, fails in 8
+        m_intersection(new T8043893<T3>()); //ok in 7, fails in 8
+        m_intersection(new T8043893<T0>()); //ok in both 7 and 8 - Z = T0 & T1
+        //class type checks
+        m_class(new T8043893<T4>()); //ok in both 7 and 8 - Z = T4
+        m_class(new T8043893<T5>()); //ok in 7, fails in 8
+        m_class(new T8043893<T0>()); //ok in both 7 and 8 - Z = T0 & T4
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/generics/inference/8043893/T8043893.out	Thu Jun 05 12:21:38 2014 +0100
@@ -0,0 +1,4 @@
+T8043893.java:35:9: compiler.err.cant.apply.symbol: kindname.method, m_intersection, T8043893<? super Z>, T8043893<T8043893.T2>, kindname.class, T8043893<X>, (compiler.misc.incompatible.upper.bounds: Z, T8043893.T2,T8043893.T1)
+T8043893.java:36:9: compiler.err.cant.apply.symbol: kindname.method, m_intersection, T8043893<? super Z>, T8043893<T8043893.T3>, kindname.class, T8043893<X>, (compiler.misc.incompatible.upper.bounds: Z, T8043893.T3,T8043893.T1)
+T8043893.java:40:9: compiler.err.cant.apply.symbol: kindname.method, m_class, T8043893<? super Z>, T8043893<T8043893.T5>, kindname.class, T8043893<X>, (compiler.misc.incompatible.upper.bounds: Z, T8043893.T5,T8043893.T4)
+3 errors
--- a/test/tools/javac/generics/inference/EagerReturnTypeResolution/EagerReturnTypeResolutionTestb.out	Wed Jun 04 20:01:13 2014 +0100
+++ b/test/tools/javac/generics/inference/EagerReturnTypeResolution/EagerReturnTypeResolutionTestb.out	Thu Jun 05 12:21:38 2014 +0100
@@ -3,37 +3,37 @@
 EagerReturnTypeResolutionTestb.java:44:29: compiler.err.prob.found.req: (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.I<?>, EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:45:26: compiler.err.prob.found.req: (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.I<?>, EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:74:15: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.I<java.lang.Integer>, EagerReturnTypeResolutionTestb.I<java.lang.Integer>,EagerReturnTypeResolutionTestb.I<java.lang.String>)
-EagerReturnTypeResolutionTestb.java:75:15: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.I<java.lang.Integer>, EagerReturnTypeResolutionTestb.I<java.lang.Integer>,EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object)
+EagerReturnTypeResolutionTestb.java:75:15: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.incompatible.upper.bounds: T, EagerReturnTypeResolutionTestb.I<java.lang.Integer>,EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:77:9: compiler.err.cant.apply.symbol: kindname.method, takeIString, EagerReturnTypeResolutionTestb.I<java.lang.String>, EagerReturnTypeResolutionTestb.I<compiler.misc.type.captureof: 1, ? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<?>>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.no.conforming.assignment.exists: (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.I<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<?>>>, EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object))
 EagerReturnTypeResolutionTestb.java:78:21: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.I<java.lang.Integer>, EagerReturnTypeResolutionTestb.I<java.lang.Integer>,EagerReturnTypeResolutionTestb.I<java.lang.String>)
-EagerReturnTypeResolutionTestb.java:79:21: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.I<java.lang.Integer>, EagerReturnTypeResolutionTestb.I<java.lang.Integer>,EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object)
+EagerReturnTypeResolutionTestb.java:79:21: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.incompatible.upper.bounds: T, EagerReturnTypeResolutionTestb.I<java.lang.Integer>,EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:81:30: compiler.err.prob.found.req: (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.I<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<?>>>, EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:82:24: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.I<java.lang.Integer>, EagerReturnTypeResolutionTestb.I<java.lang.Integer>,EagerReturnTypeResolutionTestb.I<java.lang.String>)
-EagerReturnTypeResolutionTestb.java:83:24: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.I<java.lang.Integer>, EagerReturnTypeResolutionTestb.I<java.lang.Integer>,EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object)
+EagerReturnTypeResolutionTestb.java:83:24: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.incompatible.upper.bounds: T, EagerReturnTypeResolutionTestb.I<java.lang.Integer>,EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:85:15: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.I<?>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.I<?>, EagerReturnTypeResolutionTestb.I<?>,EagerReturnTypeResolutionTestb.I<java.lang.String>)
 EagerReturnTypeResolutionTestb.java:86:9: compiler.err.cant.apply.symbol: kindname.method, takeIString, EagerReturnTypeResolutionTestb.I<java.lang.String>, EagerReturnTypeResolutionTestb.I<compiler.misc.type.captureof: 1, ?>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.no.conforming.assignment.exists: (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.I<?>, EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object))
 EagerReturnTypeResolutionTestb.java:87:21: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.I<?>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.I<?>, EagerReturnTypeResolutionTestb.I<?>,EagerReturnTypeResolutionTestb.I<java.lang.String>)
 EagerReturnTypeResolutionTestb.java:89:30: compiler.err.prob.found.req: (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.I<?>, EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:90:24: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.I<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.I<?>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.I<?>, EagerReturnTypeResolutionTestb.I<?>,EagerReturnTypeResolutionTestb.I<java.lang.String>)
 EagerReturnTypeResolutionTestb.java:91:15: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.J<java.lang.Integer>, EagerReturnTypeResolutionTestb.J<java.lang.Integer>,EagerReturnTypeResolutionTestb.J<java.lang.String>)
-EagerReturnTypeResolutionTestb.java:92:15: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.J<java.lang.Integer>, EagerReturnTypeResolutionTestb.J<java.lang.Integer>,EagerReturnTypeResolutionTestb.J<java.lang.String>,java.lang.Object)
+EagerReturnTypeResolutionTestb.java:92:15: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.incompatible.upper.bounds: T, EagerReturnTypeResolutionTestb.J<java.lang.Integer>,EagerReturnTypeResolutionTestb.J<java.lang.String>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:94:9: compiler.err.cant.apply.symbol: kindname.method, takeIString, EagerReturnTypeResolutionTestb.I<java.lang.String>, EagerReturnTypeResolutionTestb.J<compiler.misc.type.captureof: 1, ? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<?>>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.no.conforming.assignment.exists: (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.J<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<?>>>, EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object))
 EagerReturnTypeResolutionTestb.java:95:21: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.J<java.lang.Integer>, EagerReturnTypeResolutionTestb.J<java.lang.Integer>,EagerReturnTypeResolutionTestb.J<java.lang.String>)
-EagerReturnTypeResolutionTestb.java:96:21: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.J<java.lang.Integer>, EagerReturnTypeResolutionTestb.J<java.lang.Integer>,EagerReturnTypeResolutionTestb.J<java.lang.String>,java.lang.Object)
+EagerReturnTypeResolutionTestb.java:96:21: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.incompatible.upper.bounds: T, EagerReturnTypeResolutionTestb.J<java.lang.Integer>,EagerReturnTypeResolutionTestb.J<java.lang.String>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:98:30: compiler.err.prob.found.req: (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.J<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<?>>>, EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:99:24: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.J<java.lang.Integer>, EagerReturnTypeResolutionTestb.J<java.lang.Integer>,EagerReturnTypeResolutionTestb.J<java.lang.String>)
-EagerReturnTypeResolutionTestb.java:100:24: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.J<java.lang.Integer>, EagerReturnTypeResolutionTestb.J<java.lang.Integer>,EagerReturnTypeResolutionTestb.J<java.lang.String>,java.lang.Object)
+EagerReturnTypeResolutionTestb.java:100:24: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.incompatible.upper.bounds: T, EagerReturnTypeResolutionTestb.J<java.lang.Integer>,EagerReturnTypeResolutionTestb.J<java.lang.String>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:102:15: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.K>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.K, EagerReturnTypeResolutionTestb.K,EagerReturnTypeResolutionTestb.J<java.lang.String>)
 EagerReturnTypeResolutionTestb.java:103:21: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.K>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.K, EagerReturnTypeResolutionTestb.K,EagerReturnTypeResolutionTestb.J<java.lang.String>)
 EagerReturnTypeResolutionTestb.java:104:24: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.String>>,java.util.List<EagerReturnTypeResolutionTestb.K>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.K, EagerReturnTypeResolutionTestb.K,EagerReturnTypeResolutionTestb.J<java.lang.String>)
 EagerReturnTypeResolutionTestb.java:105:15: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>,java.util.List<EagerReturnTypeResolutionTestb.K>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.K, EagerReturnTypeResolutionTestb.K,EagerReturnTypeResolutionTestb.J<java.lang.Integer>)
-EagerReturnTypeResolutionTestb.java:106:9: compiler.err.cant.apply.symbol: kindname.method, takeI, EagerReturnTypeResolutionTestb.I<X>, java.lang.Object&EagerReturnTypeResolutionTestb.J<java.lang.Integer>&EagerReturnTypeResolutionTestb.K, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: java.lang.Integer, java.lang.Integer,java.lang.String)
+EagerReturnTypeResolutionTestb.java:106:15: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>,java.util.List<EagerReturnTypeResolutionTestb.K>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.incompatible.upper.bounds: T, EagerReturnTypeResolutionTestb.K,EagerReturnTypeResolutionTestb.J<java.lang.Integer>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:108:9: compiler.err.cant.apply.symbol: kindname.method, takeIString, EagerReturnTypeResolutionTestb.I<java.lang.String>, EagerReturnTypeResolutionTestb.I<compiler.misc.type.captureof: 1, ? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<?>>>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.no.conforming.assignment.exists: (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.I<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<?>>>, EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object))
 EagerReturnTypeResolutionTestb.java:109:21: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>,java.util.List<EagerReturnTypeResolutionTestb.K>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.K, EagerReturnTypeResolutionTestb.K,EagerReturnTypeResolutionTestb.J<java.lang.Integer>)
-EagerReturnTypeResolutionTestb.java:110:9: compiler.err.cant.apply.symbol: kindname.method, takeIString, EagerReturnTypeResolutionTestb.I<java.lang.String>, java.lang.Object&EagerReturnTypeResolutionTestb.J<java.lang.Integer>&EagerReturnTypeResolutionTestb.K, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.no.conforming.assignment.exists: (compiler.misc.inferred.do.not.conform.to.upper.bounds: java.lang.Object&EagerReturnTypeResolutionTestb.J<java.lang.Integer>&EagerReturnTypeResolutionTestb.K, EagerReturnTypeResolutionTestb.I<java.lang.String>,EagerReturnTypeResolutionTestb.K,EagerReturnTypeResolutionTestb.J<java.lang.Integer>,java.lang.Object))
+EagerReturnTypeResolutionTestb.java:110:21: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>,java.util.List<EagerReturnTypeResolutionTestb.K>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.incompatible.upper.bounds: T, EagerReturnTypeResolutionTestb.K,EagerReturnTypeResolutionTestb.J<java.lang.Integer>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:112:30: compiler.err.prob.found.req: (compiler.misc.inferred.do.not.conform.to.upper.bounds: EagerReturnTypeResolutionTestb.I<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<? extends java.lang.Object&java.io.Serializable&java.lang.Comparable<?>>>, EagerReturnTypeResolutionTestb.I<java.lang.String>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:113:24: compiler.err.cant.apply.symbol: kindname.method, eq2, java.util.List<T>,java.util.List<T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>,java.util.List<EagerReturnTypeResolutionTestb.K>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.inferred.do.not.conform.to.eq.bounds: EagerReturnTypeResolutionTestb.K, EagerReturnTypeResolutionTestb.K,EagerReturnTypeResolutionTestb.J<java.lang.Integer>)
-EagerReturnTypeResolutionTestb.java:114:30: compiler.err.prob.found.req: (compiler.misc.inferred.do.not.conform.to.upper.bounds: java.lang.Object&EagerReturnTypeResolutionTestb.J<java.lang.Integer>&EagerReturnTypeResolutionTestb.K, EagerReturnTypeResolutionTestb.I<java.lang.String>,EagerReturnTypeResolutionTestb.K,EagerReturnTypeResolutionTestb.J<java.lang.Integer>,java.lang.Object)
+EagerReturnTypeResolutionTestb.java:114:24: compiler.err.cant.apply.symbol: kindname.method, upper2, java.util.List<? super T>,java.util.List<? super T>, java.util.List<EagerReturnTypeResolutionTestb.J<java.lang.Integer>>,java.util.List<EagerReturnTypeResolutionTestb.K>, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.incompatible.upper.bounds: T, EagerReturnTypeResolutionTestb.K,EagerReturnTypeResolutionTestb.J<java.lang.Integer>,java.lang.Object)
 EagerReturnTypeResolutionTestb.java:174:9: compiler.err.cant.apply.symbol: kindname.method, takeLong, long, java.lang.Double, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.no.conforming.assignment.exists: (compiler.misc.infer.no.conforming.instance.exists: , T, long))
 EagerReturnTypeResolutionTestb.java:175:9: compiler.err.cant.apply.symbol: kindname.method, takeLong, long, java.lang.Double, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.no.conforming.assignment.exists: (compiler.misc.infer.no.conforming.instance.exists: , T, long))
 EagerReturnTypeResolutionTestb.java:176:9: compiler.err.cant.apply.symbol: kindname.method, takeLong, long, java.lang.Double, kindname.class, EagerReturnTypeResolutionTestb, (compiler.misc.no.conforming.assignment.exists: (compiler.misc.infer.no.conforming.instance.exists: , T, long))