Details
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Type:
Defect
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Status:
Open
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Priority:
Major
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Resolution: Unresolved
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Affects Version/s: Release 1.3, Release 1.4, Release 1.5
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Fix Version/s: Release 1.5, Release 1.6
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Component/s: None
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Labels:None
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Environment:Clojure 1.3 om Mac OS 10.7, Clojure 1.5.0 alpha1 on Linux x86_64 (OpenJDK 1.7.0 b147)
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Patch:Code
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Approval:Vetted
Description
Patch clj944-plus-tests does three things:
- includes the previous "0002" patch which has the compiler emit map types consistent with the reader
- adds tests
- removes tests that were broken all along and now symptomatic
Hi guys, I am getting the following exception:
(.containsKey {:one 1} :one)
;=> ClassCastException clojure.lang.PersistentArrayMap cannot be cast to clojure.lang.PersistentHashMap
The map is a clojure.lang.PersistentArrayMap, which obviously has a containsKey method (https://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/PersistentArrayMap.java#L95).
Casting it works fine though:
(.containsKey ^clojure.lang.PersistentArrayMap {:one 1} :one)
;=> true
The mailing list suggest that the compiler injects an incorrect cast to clojure.lang.PersistentHashMap. In this case it should probably be cast to a clojure.lang.Associative, the highest common interface having the .containsKey method.
The problem is not present in Clojure 1.2.1.
