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From "Loic Guibert (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LANG-1147) EnumUtils *BitVector issue with more than 32 values Enum
Date Fri, 12 Jun 2015 08:17:00 GMT
Loic Guibert created LANG-1147:
----------------------------------

             Summary: EnumUtils *BitVector issue with more than 32 values Enum
                 Key: LANG-1147
                 URL: https://issues.apache.org/jira/browse/LANG-1147
             Project: Commons Lang
          Issue Type: Bug
          Components: lang.*
    Affects Versions: 3.4
            Reporter: Loic Guibert
            Priority: Critical


In *EnumUtils* all _BitVector_ related methods fail in handling Enums with more than 32 values.
This is due to a implicit _int_ -> _long_ conversion in generating the Enum value _long_
mask.


*Bad code :* here *1* is an _int_ value so the *<<* operation is done into an _int_
context and then, the result is converted to a _long_ value
{code}
long mask = 1 << 32;    // -> mask = 1 and not 4294967296 (0x100000000)
{code}

*Good code :* here *1L* is a _long_ value so the *<<* operation is done into an _long_
context
{code}
long mask = 1L << 32;    // -> mask = 4294967296 (0x100000000)
{code}



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