groovy
  1. groovy
  2. GROOVY-3421

Expression underlying a spread map expression is evaluated twice

    Details

    • Type: Bug Bug
    • Status: Open Open
    • Priority: Major Major
    • Resolution: Unresolved
    • Affects Version/s: 1.7-beta-1, 2.2.0-beta-1, 2.4.0-beta-3
    • Fix Version/s: None
    • Component/s: Compiler
    • Labels:
      None
    • Testcase included:
      yes
    • Number of attachments :
      0

      Description

      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]
          }
      }
      

      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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          People

          • Assignee:
            Unassigned
            Reporter:
            Peter Niederwieser
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            Dates

            • Created:
              Updated: