I didn't expect this one. See the illustrative sequence below.
Should I be reporting this as a bug, or re-read the docs?
; CIDER 0.5.0 (Clojure 1.6.0, nREPL 0.2.3)
user> (require '[clojure.stacktrace :as st])
user> (unchecked-add (Long/MAX_VALUE) (Long/MAX_VALUE) )
-2
user> (unchecked-add ^long(Long/MAX_VALUE) ^long(Long/MAX_VALUE) )
-2
user> (unchecked-add ^Long(Long/MAX_VALUE) ^Long(Long/MAX_VALUE) )
ArithmeticException integer overflow clojure.lang.Numbers.throwIntOverflow
(Numbers.java:1424)
user> (st/e)
java.lang.ArithmeticException: integer overflow
at clojure.lang.Numbers.throwIntOverflow (Numbers.java:1424)
clojure.lang.Numbers.add (Numbers.java:1723)
clojure.lang.Numbers$LongOps.add (Numbers.java:447)
clojure.lang.Numbers.add (Numbers.java:126)
clojure.lang.Numbers.unchecked_add (Numbers.java:1671)
user$eval2514.invoke (form-init3948440390155694364.clj:1)
clojure.lang.Compiler.eval (Compiler.java:6703)
clojure.lang.Compiler.eval (Compiler.java:6666)
nil
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