File: BUGS

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ikarus 0.0.3+bzr.2010.01.26-4
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Performance Bugs:

Tail call optimization does not seem to always kick.  In this
example, x which comes in (disp -4 %esp) is copied into 
(disp -4 %esp) even though it was there to begin with.

> (lambda (x) (quotient x x))
   
    ---
    (cmpl -4 %eax)
    (jne (label L16))
    (label L17)
    (movl (disp -4 %esp) %edi)
    (movl (disp -4 %esp) %eax)
    (movl %edi %ebx)
    (movl (disp (obj quotient) 7) %edi)
    (movl %ebx (disp -4 %esp))
    (movl %eax (disp -8 %esp))
    (movl -8 %eax)
    (jmp (disp -3 %edi))
    (label L16)
    (jmp (label SL_invalid_args))
    (nop)

Other Bugs:

* fxsra does not work for large numbers

* Ensure immutable exports


Email Will Clinger regarding:

Larceny v0.93 "Deviated Prevert" (Nov 10 2006 04:27:45, precise:BSD
Unix:unified)


> (exact->inexact #xFFFFFFFFFFFFFFFF)
9.223372036854776e18

> #xFFFFFFFFFFFFFFFF
18446744073709551615

======================================================================
FIXED: 

* pretty-print goes into infinite loop on cyclic data

* set! on global names is not working.

* (exact->inexact (/ (expt 2 3000) (- (expt 2 3000) 1)))
  should return 1.0, not +nan.0.

* FIXED symbol calls are not checking for non-procedure.


* FIX: Error in generate-code: BUG: unhandles single rv.





Not applicable anymore:

* In libcompile.ss:
  If you move the (initialize-system) call to the very bottom of the
  library, the system crashes on startup.  





Fixed:

* Investigate what happens when an interrupt occurs during a write.

   > (define (f) (write (gensym)) (newline) (f))
   > (f)
   ...
   #{g17660 |adxhQB29QdSYPKBS|}
   #{g17661 |ZaFfTMGRz!c17&zm|}
   #{g17662 |>yF!AMbaIL$dTG>B|}#{g17662 |>yF!AMbaIL$dTG>B|}Error:
   interrupted.
   >

  Two displays occurred at the end.