[Bug-kawa] [bug #32223] Subclassing without default constructor

[Helmut Eller]

URL:
  <http://savannah.gnu.org/bugs/?32223>

                 Summary: Subclassing without default constructor 
                 Project: Kawa
            Submitted by: ellerh
            Submitted on: Mon 24 Jan 2011 11:24:35 AM GMT
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any

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Details:

With this Java class:

package foo;
public class Foo {
    public Foo (int i) { }
}

And this Scheme class: 

(define-simple-class bar (foo.Foo)
  ((*init* (i int))
   (invoke-special Foo (this) '*init* i)))

Note that Foo is in a non-default package.  
I get this error:

> kawa --version -C y.scm 
Kawa 1.11 (revision 0:6882M)
Copyright (C) 2009 Per Bothner
(compiling y.scm to y)
y.scm:4: internal error while compiling y.scm
java.lang.Error: passing Uninitialized<bar> as parameter
        at gnu.bytecode.CodeAttr.emitInvokeMethod(CodeAttr.java:1491)
        at gnu.bytecode.CodeAttr.emitInvokeVirtual(CodeAttr.java:1538)
        at gnu.expr.ApplyExp.compile(ApplyExp.java:394)
        at gnu.expr.ApplyExp.compile(ApplyExp.java:111)
        at gnu.expr.Expression.compileNotePosition(Expression.java:156)
        at gnu.expr.Expression.compileWithPosition(Expression.java:142)
        at gnu.expr.LambdaExp.compileBody(LambdaExp.java:1619)
        at gnu.expr.ClassExp.compileMembers(ClassExp.java:569)
        at gnu.expr.ClassInitializer.<init>(ClassInitializer.java:16)
        at gnu.expr.ClassExp.compileSetField(ClassExp.java:806)
        at gnu.expr.SetExp.compile(SetExp.java:167)
        at gnu.expr.Expression.compileNotePosition(Expression.java:156)
        at gnu.expr.Expression.compileWithPosition(Expression.java:142)
        at gnu.expr.LambdaExp.compileBody(LambdaExp.java:1619)
        at gnu.expr.Compilation.generateBytecode(Compilation.java:2015)
        at gnu.expr.Compilation.process(Compilation.java:1893)
        at gnu.expr.ModuleInfo.loadByStages(ModuleInfo.java:305)
        at gnu.expr.ModuleInfo.loadByStages(ModuleInfo.java:290)
        at kawa.repl.compileFiles(repl.java:783)
        at kawa.repl.processArgs(repl.java:412)
        at kawa.repl.main(repl.java:827)
[Exit 255]






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