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https://issues.apache.org/jira/browse/GROOVY-3421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul King updated GROOVY-3421:
------------------------------
Affects Version/s: (was: 2.4.0-rc-2)
2.4.3
> Expression underlying a spread map expression is evaluated twice
> ----------------------------------------------------------------
>
> Key: GROOVY-3421
> URL: https://issues.apache.org/jira/browse/GROOVY-3421
> Project: Groovy
> Issue Type: Bug
> Components: Compiler
> Affects Versions: 1.7-beta-1, 2.2.0-beta-1, 2.4.3
> Reporter: Peter Niederwieser
>
> {code}
> class SpreadMapBug extends GroovyTestCase {
> void test() {
> def x = 0
> assertEquals([a:1, b:1], [a:1, *:[b:++x]]) // fails; actual value:
> [a:1, b:2]
> }
> }
> {code}
> Maybe this bug is related to the (strange) AST representation for a spread
> map expression (at least that's how I found the bug):
> "*:[b:++x]" is a MapEntryExpression whose
> - key is a SpreadMapExpression whose expression is a MapExpression
> representing "[b:++x]"
> - value is a MapExpression representing "[b:++x]".
> That makes _two_ MapExpressionS...
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