8042785: javac, bridge methods are not getting the flags from the original method

Fri, 30 May 2014 18:21:05 +0100

author
vromero
date
Fri, 30 May 2014 18:21:05 +0100
changeset 2409
7e0ba7b086c8
parent 2408
716f2466ddd0
child 2410
e64bb2f5f0cf

8042785: javac, bridge methods are not getting the flags from the original method
Reviewed-by: jjg, jlahoda

src/share/classes/com/sun/tools/javac/code/Flags.java file | annotate | diff | comparison | revisions
src/share/classes/com/sun/tools/javac/comp/TransTypes.java file | annotate | diff | comparison | revisions
test/tools/javac/T8042785/FlagsNotCopiedToBridgeMethodTest.java file | annotate | diff | comparison | revisions
     1.1 --- a/src/share/classes/com/sun/tools/javac/code/Flags.java	Tue May 27 22:26:53 2014 +0100
     1.2 +++ b/src/share/classes/com/sun/tools/javac/code/Flags.java	Fri May 30 18:21:05 2014 +0100
     1.3 @@ -1,5 +1,5 @@
     1.4  /*
     1.5 - * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
     1.6 + * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
     1.7   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.8   *
     1.9   * This code is free software; you can redistribute it and/or modify it
    1.10 @@ -294,8 +294,8 @@
    1.11          ModifierFlags               = ((long)StandardFlags & ~INTERFACE) | DEFAULT,
    1.12          InterfaceMethodMask         = ABSTRACT | STATIC | PUBLIC | STRICTFP | DEFAULT,
    1.13          AnnotationTypeElementMask   = ABSTRACT | PUBLIC,
    1.14 -        LocalVarFlags               = FINAL | PARAMETER;
    1.15 -
    1.16 +        LocalVarFlags               = FINAL | PARAMETER,
    1.17 +        BridgeMethodMask            = AccessFlags | FINAL | STRICTFP;
    1.18  
    1.19      public static Set<Modifier> asModifierSet(long flags) {
    1.20          Set<Modifier> modifiers = modifierSets.get(flags);
     2.1 --- a/src/share/classes/com/sun/tools/javac/comp/TransTypes.java	Tue May 27 22:26:53 2014 +0100
     2.2 +++ b/src/share/classes/com/sun/tools/javac/comp/TransTypes.java	Fri May 30 18:21:05 2014 +0100
     2.3 @@ -254,7 +254,7 @@
     2.4  
     2.5          // Create a bridge method symbol and a bridge definition without a body.
     2.6          Type bridgeType = meth.erasure(types);
     2.7 -        long flags = impl.flags() & AccessFlags | SYNTHETIC | BRIDGE |
     2.8 +        long flags = impl.flags() & BridgeMethodMask | SYNTHETIC | BRIDGE |
     2.9                  (origin.isInterface() ? DEFAULT : 0);
    2.10          if (hypothetical) flags |= HYPOTHETICAL;
    2.11          MethodSymbol bridge = new MethodSymbol(flags,
    2.12 @@ -932,7 +932,7 @@
    2.13                                      ClassSymbol c,
    2.14                                      ListBuffer<JCTree> bridges) {
    2.15          Type implErasure = impl.erasure(types);
    2.16 -        long flags = (impl.flags() & AccessFlags) | SYNTHETIC | BRIDGE | OVERRIDE_BRIDGE;
    2.17 +        long flags = impl.flags() & BridgeMethodMask | SYNTHETIC | BRIDGE | OVERRIDE_BRIDGE;
    2.18          member = new MethodSymbol(flags, member.name, member.type, c);
    2.19          JCMethodDecl md = make.MethodDef(member, null);
    2.20          JCExpression receiver = make.Super(types.supertype(c.type).tsym.erasure(types), c);
     3.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     3.2 +++ b/test/tools/javac/T8042785/FlagsNotCopiedToBridgeMethodTest.java	Fri May 30 18:21:05 2014 +0100
     3.3 @@ -0,0 +1,79 @@
     3.4 +/*
     3.5 + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
     3.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     3.7 + *
     3.8 + * This code is free software; you can redistribute it and/or modify it
     3.9 + * under the terms of the GNU General Public License version 2 only, as
    3.10 + * published by the Free Software Foundation.
    3.11 + *
    3.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    3.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    3.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    3.15 + * version 2 for more details (a copy is included in the LICENSE file that
    3.16 + * accompanied this code).
    3.17 + *
    3.18 + * You should have received a copy of the GNU General Public License version
    3.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    3.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    3.21 + *
    3.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    3.23 + * or visit www.oracle.com if you need additional information or have any
    3.24 + * questions.
    3.25 + */
    3.26 +
    3.27 +/*
    3.28 + * @test
    3.29 + * @bug 8042785
    3.30 + * @summary javac, bridge methods are not getting the flags from the original method
    3.31 + * @run main FlagsNotCopiedToBridgeMethodTest
    3.32 + */
    3.33 +
    3.34 +import java.io.BufferedInputStream;
    3.35 +import java.nio.file.Files;
    3.36 +import java.nio.file.Path;
    3.37 +import java.nio.file.Paths;
    3.38 +
    3.39 +import com.sun.tools.classfile.AccessFlags;
    3.40 +import com.sun.tools.classfile.ClassFile;
    3.41 +import com.sun.tools.classfile.Method;
    3.42 +import com.sun.tools.javac.util.Assert;
    3.43 +
    3.44 +public class FlagsNotCopiedToBridgeMethodTest {
    3.45 +
    3.46 +    public static void main(String[] args) throws Exception {
    3.47 +        new FlagsNotCopiedToBridgeMethodTest().run();
    3.48 +    }
    3.49 +
    3.50 +    void run() throws Exception {
    3.51 +        checkClassFile(Paths.get(System.getProperty("test.classes"),
    3.52 +                this.getClass().getSimpleName() + "$CovariantReturnType.class"));
    3.53 +        checkClassFile(Paths.get(System.getProperty("test.classes"),
    3.54 +                this.getClass().getSimpleName() +
    3.55 +                "$CovariantReturnType$VisibilityChange.class"));
    3.56 +    }
    3.57 +
    3.58 +    void checkClassFile(final Path cfilePath) throws Exception {
    3.59 +        ClassFile classFile = ClassFile.read(
    3.60 +                new BufferedInputStream(Files.newInputStream(cfilePath)));
    3.61 +        for (Method method : classFile.methods) {
    3.62 +            if (method.access_flags.is(AccessFlags.ACC_BRIDGE)) {
    3.63 +                Assert.check(method.access_flags.is(AccessFlags.ACC_FINAL | AccessFlags.ACC_STRICT),
    3.64 +                        "bridge method has incorrect flags");
    3.65 +            }
    3.66 +        }
    3.67 +    }
    3.68 +
    3.69 +    abstract class T<A,B> {
    3.70 +        B m(A a){ return null; }
    3.71 +    }
    3.72 +
    3.73 +    class CovariantReturnType extends T<Integer, Integer> {
    3.74 +        strictfp final Integer m(Integer i) {
    3.75 +            return i;
    3.76 +        }
    3.77 +
    3.78 +        public class VisibilityChange extends CovariantReturnType {}
    3.79 +
    3.80 +    }
    3.81 +
    3.82 +}

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