Fri, 25 Jul 2008 12:22:09 +0100
6675483: Javac rejects multiple type-variable bound declarations starting with an enum type
Summary: Intersection types bounded by an enum are erroeously considered harmful by javac
Reviewed-by: jjg
src/share/classes/com/sun/tools/javac/comp/Attr.java | file | annotate | diff | comparison | revisions | |
test/tools/javac/enum/T6675483.java | file | annotate | diff | comparison | revisions |
1.1 --- a/src/share/classes/com/sun/tools/javac/comp/Attr.java Fri Jul 25 12:05:43 2008 +0100 1.2 +++ b/src/share/classes/com/sun/tools/javac/comp/Attr.java Fri Jul 25 12:22:09 2008 +0100 1.3 @@ -2664,7 +2664,7 @@ 1.4 // Enums may not be extended by source-level classes 1.5 if (st.tsym != null && 1.6 ((st.tsym.flags_field & Flags.ENUM) != 0) && 1.7 - ((c.flags_field & Flags.ENUM) == 0) && 1.8 + ((c.flags_field & (Flags.ENUM | Flags.COMPOUND)) == 0) && 1.9 !target.compilerBootstrap(c)) { 1.10 log.error(env.tree.pos(), "enum.types.not.extensible"); 1.11 }
2.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 2.2 +++ b/test/tools/javac/enum/T6675483.java Fri Jul 25 12:22:09 2008 +0100 2.3 @@ -0,0 +1,40 @@ 2.4 +/* 2.5 + * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved. 2.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 2.7 + * 2.8 + * This code is free software; you can redistribute it and/or modify it 2.9 + * under the terms of the GNU General Public License version 2 only, as 2.10 + * published by the Free Software Foundation. 2.11 + * 2.12 + * This code is distributed in the hope that it will be useful, but WITHOUT 2.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 2.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 2.15 + * version 2 for more details (a copy is included in the LICENSE file that 2.16 + * accompanied this code). 2.17 + * 2.18 + * You should have received a copy of the GNU General Public License version 2.19 + * 2 along with this work; if not, write to the Free Software Foundation, 2.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2.21 + * 2.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 2.23 + * CA 95054 USA or visit www.sun.com if you need additional information or 2.24 + * have any questions. 2.25 + */ 2.26 + 2.27 +/* 2.28 + * @test 2.29 + * @bug 6675483 2.30 + * 2.31 + * @summary Javac rejects multiple type-variable bound declarations starting with an enum type 2.32 + * @author Maurizio Cimadamore 2.33 + * 2.34 + * @compile T6675483.java 2.35 + */ 2.36 + 2.37 +public class T6675483 { 2.38 + enum E implements Comparable<E> {} 2.39 + 2.40 + interface C<T extends E & Comparable<E>> { 2.41 + <S extends E & Comparable<E>> void m(); 2.42 + } 2.43 +}