[Bug-kawa] [bug #34004] Nullpointer exception in compiler

[Helmut Eller]

URL:
  <http://savannah.gnu.org/bugs/?34004>

                 Summary: Nullpointer exception in compiler
                 Project: Kawa
            Submitted by: ellerh
            Submitted on: Sat 13 Aug 2011 11:57:23 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:

Compiling the following program productes a NullPointerException:

(module-export main)

(define (bar (thunk procedure))
  (thunk))

(define (foo x)
  (bar (lambda () x)))
  
(define (main)
  (foo 1))



kawa -C x.scm 
(compiling x.scm to x)
x.scm:5: internal error while compiling x.scm
java.lang.NullPointerException
        at gnu.expr.LambdaExp.addMethodFor(LambdaExp.java:910)
        at gnu.expr.LambdaExp.addMethodFor(LambdaExp.java:807)
        at gnu.expr.LambdaExp.allocMethod(LambdaExp.java:1209)
        at gnu.expr.LambdaExp.compileSetField(LambdaExp.java:658)
        at gnu.expr.LambdaExp.compile(LambdaExp.java:754)
        at gnu.expr.Declaration.load(Declaration.java:372)
        at gnu.expr.ReferenceExp.compile(ReferenceExp.java:170)
        at gnu.expr.ApplyExp.compile(ApplyExp.java:374)
        at gnu.expr.ApplyExp.compile(ApplyExp.java:126)
        at gnu.expr.Expression.compileNotePosition(Expression.java:156)
        at gnu.expr.Expression.compileWithPosition(Expression.java:142)
        at gnu.expr.LambdaExp.compileBody(LambdaExp.java:1627)
        at gnu.expr.LambdaExp.compileAsMethod(LambdaExp.java:1603)
        at gnu.expr.LambdaExp.compileEnd(LambdaExp.java:561)
        at gnu.expr.Compilation.generateBytecode(Compilation.java:2022)
        at gnu.expr.Compilation.process(Compilation.java:1899)
        at gnu.expr.ModuleInfo.loadByStages(ModuleInfo.java:305)
        at gnu.expr.ModuleInfo.loadByStages(ModuleInfo.java:290)
        at kawa.repl.compileFiles(repl.java:785)
        at kawa.repl.processArgs(repl.java:412)
        at kawa.repl.main(repl.java:831)
[Exit 255]






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