[Bug-kawa] [bug #36560] eq? <endless-loop>

[Helmut Eller]

URL:
  <http://savannah.gnu.org/bugs/?36560>

                 Summary: eq? <endless-loop>
                 Project: Kawa
            Submitted by: ellerh
            Submitted on: Wed 30 May 2012 07:09:43 AM GMT
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any

    _______________________________________________________

Details:

The compiler doesn't like this code:

(define (foo) (eq? (let loop () (loop)) #t))



kawa --version -C y.scm
Kawa 1.12 (revision 7242M)
Copyright (C) 2011 Per Bothner
(compiling y.scm to y)
y.scm:2:3: caught exception in inline-compiler for #<procedure eq?> -
java.lang.Error: popType called with empty stack y.foo()boolean
    gnu.bytecode.CodeAttr.popType(CodeAttr.java:442)
    gnu.bytecode.CodeAttr.emitGotoIfCompare2(CodeAttr.java:1650)
    gnu.bytecode.CodeAttr.emitGotoIfNE(CodeAttr.java:1691)
    gnu.bytecode.CodeAttr.emitIfEq(CodeAttr.java:1794)
    gnu.kawa.functions.CompileMisc.compileEq(CompileMisc.java:338)
    gnu.kawa.functions.CompileMisc.compile(CompileMisc.java:64)
    gnu.expr.ApplyExp.inlineCompile(ApplyExp.java:599)
    gnu.expr.ApplyExp.compile(ApplyExp.java:190)
    gnu.expr.ApplyExp.compile(ApplyExp.java:126)
    gnu.expr.Expression.compileNotePosition(Expression.java:156)
    gnu.expr.Expression.compileWithPosition(Expression.java:142)
    gnu.expr.LambdaExp.compileBody(LambdaExp.java:1670)
    gnu.expr.LambdaExp.compileAsMethod(LambdaExp.java:1646)
    gnu.expr.LambdaExp.compileSetField(LambdaExp.java:688)
    gnu.expr.SetExp.compile(SetExp.java:170)
    gnu.expr.Expression.compileNotePosition(Expression.java:156)
    gnu.expr.Expression.compileWithPosition(Expression.java:142)
    gnu.expr.LambdaExp.compileBody(LambdaExp.java:1670)
    gnu.expr.Compilation.generateBytecode(Compilation.java:2074)
    gnu.expr.Compilation.process(Compilation.java:1952)
    gnu.expr.ModuleInfo.loadByStages(ModuleInfo.java:305)
    gnu.expr.ModuleInfo.loadByStages(ModuleInfo.java:290)
    kawa.repl.compileFiles(repl.java:824)
    kawa.repl.processArgs(repl.java:444)
    kawa.repl.main(repl.java:870)
y.scm:1: internal error while compiling y.scm
java.lang.Error: popType called with empty stack y.foo()boolean
        at gnu.bytecode.CodeAttr.popType(CodeAttr.java:442)
        at gnu.bytecode.CodeAttr.emitRawReturn(CodeAttr.java:2092)
        at gnu.bytecode.CodeAttr.emitReturn(CodeAttr.java:2079)
        at gnu.expr.LambdaExp.compileEnd(LambdaExp.java:578)
        at gnu.expr.LambdaExp.compileAsMethod(LambdaExp.java:1647)
        at gnu.expr.LambdaExp.compileSetField(LambdaExp.java:688)
        at gnu.expr.SetExp.compile(SetExp.java:170)
        at gnu.expr.Expression.compileNotePosition(Expression.java:156)
        at gnu.expr.Expression.compileWithPosition(Expression.java:142)
        at gnu.expr.LambdaExp.compileBody(LambdaExp.java:1670)
        at gnu.expr.Compilation.generateBytecode(Compilation.java:2074)
        at gnu.expr.Compilation.process(Compilation.java:1952)
        at gnu.expr.ModuleInfo.loadByStages(ModuleInfo.java:305)
        at gnu.expr.ModuleInfo.loadByStages(ModuleInfo.java:290)
        at kawa.repl.compileFiles(repl.java:824)
        at kawa.repl.processArgs(repl.java:444)
        at kawa.repl.main(repl.java:870)







    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?36560>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/