Ah, I'm embarassed for not trying it on the developer version earlier
-- I'm running 1.2. Since Clojure 1.3 changes the semantics of -
w.r.t. overflow, it succesffully catches this.

However, -' still has this bug as of Clojure 1.3 Alpha 4:

Clojure 1.3.0-alpha4
user=> (-' 0 -9223372036854775808)
-9223372036854775808


On Dec 12, 9:17 pm, Stuart Halloway <stuart.hallo...@gmail.com> wrote:
> Hi James,
>
> I am not seeing this behavior on master. If you are, would love to know 
> additional context.
>
> Stu
>
> > user> (- 0 -9223372036854775808)
> > -9223372036854775808
>
> > It's worth noting that -9223372036854775808 is Long/MIN_VALUE, and
> > that this is the expected result with native 64-bit longs, though not
> > in a language with automatic long-to-BigInteger conversion. It appears
> > that a few related bugs (e.g.:http://dev.clojure.org/jira/browse/CLJ-32)
> > have been caught and fixed, but this one still lives.
>
> > (I now appreciate why "How do you detect integer overflows?" is one of
> > the favorite interview questions of the Software Engineering
> > Institute.)
>
> > Sincerely,
> > James Koppel
>
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