Just deployed to our staging environment and ran into an unexpected stack
overflow error. Here's a reduced test case:
user> (->> (range 10000) (mapcat (fn [_] (java.util.ArrayList. (range
10)))) (reduce (constantly nil)))
java.lang.StackOverflowError:
RT.java:509 clojure.lang.RT.seq
core.clj:135 clojure.core/seq
core.clj:698 clojure.core/concat[fn]
LazySeq.java:40 clojure.lang.LazySeq.sval
LazySeq.java:49 clojure.lang.LazySeq.seq
ChunkedCons.java:59 clojure.lang.ChunkedCons.chunkedNext
core.clj:671 clojure.core/chunk-next
protocols.clj:119 clojure.core.protocols/fn
protocols.clj:19 clojure.core.protocols/fn[fn]
protocols.clj:31 clojure.core.protocols/seq-reduce
protocols.clj:75 clojure.core.protocols/fn
protocols.clj:13 clojure.core.protocols/fn[fn]
protocols.clj:152 clojure.core.protocols/fn
protocols.clj:19 clojure.core.protocols/fn[fn]
protocols.clj:31 clojure.core.protocols/seq-reduce
protocols.clj:75 clojure.core.protocols/fn
protocols.clj:13 clojure.core.protocols/fn[fn]
protocols.clj:122 clojure.core.protocols/fn
protocols.clj:19 clojure.core.protocols/fn[fn]
protocols.clj:31 clojure.core.protocols/seq-reduce
protocols.clj:75 clojure.core.protocols/fn
protocols.clj:13 clojure.core.protocols/fn[fn]
protocols.clj:152 clojure.core.protocols/fn
protocols.clj:19 clojure.core.protocols/fn[fn]
protocols.clj:31 clojure.core.protocols/seq-reduce
protocols.clj:75 clojure.core.protocols/fn
protocols.clj:13 clojure.core.protocols/fn[fn]
protocols.clj:122 clojure.core.protocols/fn
protocols.clj:19 clojure.core.protocols/fn[fn]
protocols.clj:31 clojure.core.protocols/seq-reduce
protocols.clj:75 clojure.core.protocols/fn
protocols.clj:13 clojure.core.protocols/fn[fn]
protocols.clj:152 clojure.core.protocols/fn
protocols.clj:19 clojure.core.protocols/fn[fn]
protocols.clj:31 clojure.core.protocols/seq-reduce
protocols.clj:75 clojure.core.protocols/fn
protocols.clj:13 clojure.core.protocols/fn[fn]
protocols.clj:122 clojure.core.protocols/fn
protocols.clj:19 clojure.core.protocols/fn[fn]
protocols.clj:31 clojure.core.protocols/seq-reduce
protocols.clj:75 clojure.core.protocols/fn
protocols.clj:13 clojure.core.protocols/fn[fn]
protocols.clj:152 clojure.core.protocols/fn
protocols.clj:19 clojure.core.protocols/fn[fn]
protocols.clj:31 clojure.core.protocols/seq-reduce
protocols.clj:75 clojure.core.protocols/fn
protocols.clj:13 clojure.core.protocols/fn[fn]
protocols.clj:122 clojure.core.protocols/fn
protocols.clj:19 clojure.core.protocols/fn[fn]
....
On Thursday, May 21, 2015 at 9:31:08 AM UTC-7, Alex Miller wrote:
>
> Clojure 1.7.0-RC1 is now available.
>
> Try it via
> - Download: https://repo1.maven.org/maven2/org/clojure/clojure/1.7.0-RC1/
> - Leiningen: [org.clojure/clojure "1.7.0-RC1"]
>
> The only change since 1.7.0-beta3 is CLJ-1706, which makes reader
> conditional splicing an error at the top level (previously it would
> silently drop all but the first spliced element).
>
> For a full list of changes since 1.6.0, see:
> https://github.com/clojure/clojure/blob/master/changes.md
>
> Please give it a try and let us know if things are working (or not). The
> more and quicker feedback we get, the sooner we can release 1.7.0 final!
>
> - Alex
>
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