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https://issues.apache.org/jira/browse/GROOVY-8965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17564403#comment-17564403
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ASF GitHub Bot commented on GROOVY-8965:
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eric-milles opened a new pull request, #1742:
URL: https://github.com/apache/groovy/pull/1742
As discussed under 8965 and 10668, check LUB type first for common method
(fixes `testMultipleInstanceOf4`). Duck-typing (`testMultipleInstanceOf1` and
`testMultipleInstanceOf5`) is incomplete; currently reported as ambiguous
method error.
https://issues.apache.org/jira/browse/GROOVY-8965
https://issues.apache.org/jira/browse/GROOVY-10180
https://issues.apache.org/jira/browse/GROOVY-10668
> instanceof with || inserts wrong cast
> -------------------------------------
>
> Key: GROOVY-8965
> URL: https://issues.apache.org/jira/browse/GROOVY-8965
> Project: Groovy
> Issue Type: Bug
> Components: Static compilation
> Affects Versions: 2.5.5
> Reporter: Daniil Ovchinnikov
> Assignee: Eric Milles
> Priority: Major
>
> {code:java}
> @groovy.transform.CompileStatic
> def foo(a) {
> if (a instanceof Integer || a instanceof Double) {
> a.floatValue() // expected: cast to Number; actual: cast to Integer
> }
> }
> println foo(1d).class // CCE: java.lang.Double cannot be cast to
> java.lang.Integer
> {code}
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