6531075: Missing synthetic casts when accessing fields/methods of intersection types including type variables
Summary: bug when javac generates code involving intersection types
Reviewed-by: jjg
--- a/langtools/src/share/classes/com/sun/tools/javac/comp/TransTypes.java Thu Apr 03 18:01:55 2008 -0700
+++ b/langtools/src/share/classes/com/sun/tools/javac/comp/TransTypes.java Wed Apr 09 13:19:01 2008 +0100
@@ -690,13 +690,15 @@
public void visitSelect(JCFieldAccess tree) {
Type t = tree.selected.type;
- if (t.isCompound() || (t.tag == TYPEVAR && t.getUpperBound().isCompound())) {
+ while (t.tag == TYPEVAR)
+ t = t.getUpperBound();
+ if (t.isCompound()) {
if ((tree.sym.flags() & IPROXY) != 0) {
tree.sym = ((MethodSymbol)tree.sym).
implemented((TypeSymbol)tree.sym.owner, types);
}
tree.selected = cast(
- translate(tree.selected, erasure(t)),
+ translate(tree.selected, erasure(tree.selected.type)),
erasure(tree.sym.owner.type));
} else
tree.selected = translate(tree.selected, erasure(t));
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/generics/6531075/T6531075.java Wed Apr 09 13:19:01 2008 +0100
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2008 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 6531075
+ *
+ * @summary Missing synthetic casts when accessing fields/methods of intersection types including type variables
+ * @author Maurizio Cimadamore
+ *
+ */
+
+
+public class T6531075 {
+
+ static class A {
+ void a() {}
+ }
+
+ static interface I{
+ void i();
+ }
+
+ static class E extends A implements I{
+ public void i() {}
+ }
+
+ static class C<W extends A & I, T extends W>{
+ T t;
+ W w;
+ C(W w, T t) {
+ this.w = w;
+ this.t = t;
+ }
+ }
+
+ public static void main(String... args) {
+ C<E,E> c = new C<E,E>(new E(), new E());
+ testMemberMethods(c);
+ }
+
+ static void testMemberMethods(C<?, ?> arg) {
+ arg.t.a();
+ arg.t.i();
+ }
+}