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https://issues.apache.org/jira/browse/GROOVY-7665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14997380#comment-14997380
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ASF GitHub Bot commented on GROOVY-7665:
----------------------------------------

GitHub user jwagenleitner opened a pull request:

    https://github.com/apache/incubator-groovy/pull/183

    GROOVY-7665 - JsonSlurperCharSource decimal parsing producing unexpected 
results

    Commit 842bcd4e23fefdf5b5e17d8d91af50e1ce565096 introduced the `BigDecimal` 
return types and reused some of the original parsing methods.  However, in this 
case I think it makes more sense to just let `BigDecimal` parse the text since 
converting first to a double can cause some odd results.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/jwagenleitner/incubator-groovy GROOVY-7665

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/incubator-groovy/pull/183.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #183
    
----
commit 8d17cc10559c69eb93bb7aa39a9f101bcd3296e5
Author: John Wagenleitner <john.wagenleit...@gmail.com>
Date:   2015-11-09T21:13:20Z

    GROOVY-7665 - JsonSlurperCharSource decimal parsing producing unexpected 
results

----


> JsonSlurperCharSource decimal parsing producing unexpected results
> ------------------------------------------------------------------
>
>                 Key: GROOVY-7665
>                 URL: https://issues.apache.org/jira/browse/GROOVY-7665
>             Project: Groovy
>          Issue Type: Bug
>          Components: JSON
>    Affects Versions: 2.4.5
>            Reporter: John Wagenleitner
>            Priority: Minor
>
> When using the JsonParserType.CHARACTER_SOURCE decimal numbers are first 
> parsed to double value and that value is used to construct the BigDecimal to 
> return.  This can produce some unexpected results.
> For example:
> {code}
> ​import groovy.json.*
> def parser = new JsonSlurper().setType(JsonParserType.CHARACTER_SOURCE)
> def json = parser.parseText('{"num": 123.40}')
> assert json.num instanceof BigDecimal
> assert 123.40G == json.num​
> {code}
> Fails with:
> {code}
> Assertion failed: 
> assert 123.40G == json.num
>                |  |    |
>                |  |    123.400000000000005684341886080801486968994140625
>                |  [num:123.400000000000005684341886080801486968994140625]
>                false
>       at Script1.run(Script1.groovy:8)
> {code}



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