langtools/test/tools/javac/lambda/LambdaLocalTest.java
author rfield
Wed, 30 Apr 2014 23:02:14 -0700
changeset 24225 44f3a7b2ac71
permissions -rw-r--r--
8029852: Bad code generated (VerifyError) when lambda instantiates enclosing local class and has captured variables 8029725: Lambda reference to containing local class causes javac infinite recursion Reviewed-by: vromero, jlahoda, dlsmith

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 */

/*
 * @test
 * @bug 8029725
 * @summary Lambda reference to containing local class causes javac infinite recursion
 * @author  Robert Field
 * @run main LambdaLocalTest
 */

public class LambdaLocalTest {
    interface F {void f();}

    static F f;
    static StringBuffer sb = new StringBuffer();

    static void assertEquals(Object val, Object expected) {
        if (!val.equals(expected)) {
            throw new AssertionError("expected '" + expected + "' got '" + val + "'");
        }
    }

    public static void main(String[] args) {
        class Local {
            public Local() {
                f = () -> new Local();
                sb.append("+");
            }
        }
        new Local();
        f.f();
        assertEquals(sb.toString(), "++");
    }
}