Booleans contained in Clojure maps deserialized as new instances of java.lang.Boolean - breaks "if"

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Booleans contained in Clojure maps deserialized as new instances of java.lang.Boolean - breaks "if"

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Ok this seems quite fundamental so I'm assuming it's my lack of Java knowledge 
and is known, if strange, behaviour, rather than a bug. But as far as I can 
see, SpyMemcached uses an ObjectInputStream/OutputStream to 
serialize/deserialize any java objects it is sent (I'm looking in 
BaseSerializingTranscoder.java, lines 95-144).

So I tried serializing a java.util.HashMap containing a boolean value using an 
ObjectInputStream, then deserialized it using an ObjectOutputStream, and got 
the same problem - a new instance of java.lang.Boolean is created. Here's my 
REPL session (again, apologies for the non-Java):

user=> (def bos (ByteArrayOutputStream.))
#'user/bos

user=> (def os (ObjectOutputStream. bos))
#'user/os

user=> (def hm (HashMap.))
#'user/hm

user=> (.put hm "abc" false)
nil

user=> (.get hm "abc")
false

user=> (identical? false (.get hm "abc"))
true

user=> (.writeObject os hm)
nil

user=> (def ba (.toByteArray bos))
#'user/ba

user=> ba
#<byte[] [B@737e2e57>

user=> (def bis (ByteArrayInputStream. ba))
#'user/bis

user=> (def is (ObjectInputStream. bis))
#'user/is

user=> (def newhm (.readObject is))
#'user/newhm

user=> (.get newhm "abc")
false

user=> (identical? false (.get newhm "abc"))
false

Original comment by [email protected] on 14 Apr 2015 at 5:59