Hi,

On 5/17/2015 5:32 PM, Atticus wrote:
---------------------------
$ racket
Welcome to Racket v6.1.1.
> (eq? 'l 'l)
#f
> (eq? 'l 'l)
#t
>

$ racket --no-jit
Welcome to Racket v6.1.1.
> (eq? 'l 'l)
#f
> (eq? 'l 'l)
#t
> (eq? 'l 'l)
#f
> (eq? 'l 'l)
#t
> (eq? 'l 'l)
#t
> (eq? 'l 'l)
#t
> (eq? 'l 'l)
#f
> (eq? 'l 'l)
#f
>

---------------------------

How to reproduce this behaviour? Just start racket from the command line
and type '(eq? 'l 'l), this should return #f (or sometimes #t). The next
time the same expression returns #t. Whats also interesting is that with
the command line option --no-jit the return value seems to randomly
change between #t and #f.   ...

I can't reproduce this. Might there have been some control characters accidentally in your input?

I have 6.1.1 32-bit and 64-bit on Windows 7, and 64-bit on Centos 6.6 and Ubuntu 14.04. Tried them all with and without JIT. Also tried the repl in DrRacket on Windows (Linux are command line only). All worked as expected.

George


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