Depends what the real offending code is. For example, if it contains
unsafePerformIO then it's not a bug.

On 10 July 2012 12:42, Sönke Hahn <shahn@cs.t...> wrote:
> Hi!
>
> I've discovered a strange bug that violates simple equational reasoning.
> Basically, something similar to this:
>
> let a = f x
> in a == f x
>
> evaluates to False.
>
> I'd like to report this on ghc-trac, but I realised, that I don't know a
> good name for behaviour like this. Is there one? "Broken referential
> transparency", perhaps?
>
> Thanks,
> Sönke
>
>
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