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https://issues.apache.org/jira/browse/GROOVY-9591?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Daniel Sun resolved GROOVY-9591.
--------------------------------
Fix Version/s: 3.0.5
4.0.0-alpha-1
Resolution: Fixed
> Compiler error for use of variable expression within tap closure
> ----------------------------------------------------------------
>
> Key: GROOVY-9591
> URL: https://issues.apache.org/jira/browse/GROOVY-9591
> Project: Groovy
> Issue Type: Bug
> Affects Versions: 3.0.4, 2.5.12
> Reporter: Eric Milles
> Assignee: Eric Milles
> Priority: Major
> Fix For: 4.0.0-alpha-1, 3.0.5
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Consider the following:
> {code:groovy}
> @groovy.transform.ToString
> class A {
> A(a) {}
> def b
> }
> class C {
> C() {
> this(new A(null).tap { b = 42 })
> }
> C(x) {
> print x
> }
> }
> new C() // should output "A(42)"
> {code}
> A has no default constructor, so properties are initialized in tap closure.
> Because the "tap" expression is passed as argument to special constructor
> call, extra static checking is performed and the error "Apparent variable 'b'
> was found in a static scope but doesn't refer to a local variable, static
> field or class." is emitted.
> Creation of A cannot be moved to a local variable because special constructor
> call must be the first statement/expression in the constructor body.
> This was discovered while investigating variations of GROOVY-8327,
> GROOVY-8389, and GROOVY-9587.
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