javac throws AssertionError when it compiles the program using Generics(Void) to ReturnType and MethodReference.

[bitter_fox]

Oh, thank you.

bitter_fox

2011年12月1日22:26 Maurizio Cimadamore <maurizio.cimadamore at oracle.com>:

> Thanks for the reoprt - I have a fix for this; I will push it later today.
>
> Maurizio
>
> On 01/12/11 01:16, 苦狐 wrote:
> > Hi.
> >
> > javac(version-1.8.0-ea(lambda-8-b1314-windows-x64-10_nov_2011)) throws
> > AssertionError when it compiles the program using Generics(Void) to
> > ReturnType and MethodReference.
> >
> > This is the test case.
> >
> > // vvvvvvvvvvvvv Code vvvvvvvvvvvvv
> >
> > import java.io.PrintStream;
> >
> > public class Main
> > {
> >     interface Functional
> >     {
> >         public void invoke();
> >     }
> >
> >     interface Functionl0<RET>
> >     {
> >         public RET invoke();
> >     }
> >
> >     interface Functional1<RET, ARG1>
> >     {
> >         public RET invoke(ARG1 arg1);
> >     }
> >
> >     public static void staticTest_void()
> >     {
> >         System.out.println("HelloWorld");
> >     }
> >
> >     public void test_void()
> >     {
> >         System.out.println("HelloWorld");
> >     }
> >
> >     public static void main(String[] args)
> >     {
> >         Functional                       f0 = () ->
> > System.out.println("HelloWorld"); // OK
> >         Functional                       f1 =
> > Main#staticTest_void();                 // OK
> >
> >         Functional0<Void>                f2 = () ->
> > System.out.println("HelloWorld"); // OK
> >         Functional0<Void>                f3 =
> > Main#staticTest_void;                   // throws AssertionError
> >         Functional0<Void>                f4 = () ->
> > Main.staticTest_void();           // OK
> >
> >         Functional1<Void, String>        f5 = s ->
> > System.out.println(s);             // OK
> >         Functional1<Void, String>        f6 =
> > System.out#println;                     // throws AssertionError
> >         Functional1<PrintStream, String> f7 =
> > System.out#printf;                      // OK
> >
> >         Functional1<Void, Main>          f8 =
> > Main#test_void;                         // throws AssertionError
> >
> >         Functional                       f9 = new
> > Main()#test_void;                   // OK
> >         Functional0<Void>                f10 = new
> > Main()#test_void;                  // throws AssertionError
> >     }
> > }
> >
> > // ^^^^^^^^^^^^^ Code ^^^^^^^^^^^^^
> >
> > This problem is like "Javac crashes when SAM converting method
> reference".(
> >
> http://mail.openjdk.java.net/pipermail/lambda-dev/2011-November/004185.html
> )
> > And it was fixed by "hg: lambda/lambda/langtools: Bug fixes".(
> >
> http://mail.openjdk.java.net/pipermail/lambda-dev/2011-November/004252.html
> )
> > So this problem might already be fixed together with that.
> > Please check this.
> >
> > This is the Message from javac, and the StackTrace.
> >
> >
> ==========================================================================================
> > コンパイラで例外が発生しました(1.8.0-ea)。Bug Paradeに同じバグが登録されていない
> > ことをご確認の上、Java Developer Connection(http://java.sun.com/webapps/bugrepor
> > t)でバグの登録をお願いいたします。レポートには、そのプログラムと下記の診断内容を
> > 含めてください。ご協力ありがとうございます。
> > java.lang.AssertionError
> >         at com.sun.tools.javac.jvm.Items$Item.load(Items.java:206)
> >         at com.sun.tools.javac.jvm.Items$Item.coerce(Items.java:254)
> >         at com.sun.tools.javac.jvm.Items$Item.coerce(Items.java:273)
> >         at com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:844)
> >         at com.sun.tools.javac.jvm.Gen.visitReturn(Gen.java:1669)
> >         at
> com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1266)
> >         at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:689)
> >         at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:724)
> >         at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:710)
> >         at com.sun.tools.javac.jvm.Gen.genStats(Gen.java:761)
> >         at com.sun.tools.javac.jvm.Gen.visitBlock(Gen.java:1040)
> >         at
> com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:792)
> >         at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:689)
> >         at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:724)
> >         at com.sun.tools.javac.jvm.Gen.genMethod(Gen.java:918)
> >         at com.sun.tools.javac.jvm.Gen.visitMethodDef(Gen.java:890)
> >         at
> > com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:676)
> >         at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:689)
> >         at com.sun.tools.javac.jvm.Gen.genClass(Gen.java:2256)
> >         at
> > com.sun.tools.javac.main.JavaCompiler.genCode(JavaCompiler.java:727)
> >         at
> > com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1466)
> >         at
> > com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1434)
> >         at
> > com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:885)
> >         at
> > com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:844)
> >         at com.sun.tools.javac.main.Main.compile(Main.java:430)
> >         at com.sun.tools.javac.main.Main.compile(Main.java:344)
> >         at com.sun.tools.javac.main.Main.compile(Main.java:335)
> >         at com.sun.tools.javac.Main.compile(Main.java:76)
> >         at com.sun.tools.javac.Main.main(Main.java:61)
> >
> ==========================================================================================
> >
> > Thanks.
> > bitter_fox
> >
>
>