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https://issues.apache.org/jira/browse/GROOVY-9953?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Milles updated GROOVY-9953:
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Fix Version/s: 3.0.8
> Type from flow typing is not propagated in variable assignments
> ---------------------------------------------------------------
>
> Key: GROOVY-9953
> URL: https://issues.apache.org/jira/browse/GROOVY-9953
> Project: Groovy
> Issue Type: Bug
> Components: Static compilation, Static Type Checker
> Affects Versions: 3.0.7, 4.0.0-alpha-2
> Reporter: Stefanos Chaliasos
> Assignee: Eric Milles
> Priority: Major
> Fix For: 3.0.8, 4.0.0-alpha-3
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> I have the following Groovy program.
> {code:groovy}
> class A {}
> @groovy.transform.CompileStatic
> class Main {
> static A bar(Object x) {
> if (x instanceof A) {
> def y = x // Inferred Object and not A
> y
> } else {
> new A()
> }
> }
> }
> {code}
> h2. Actual Behavior
> The program does not compile, and I get the following error.
> {code:java}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
> failed:
> Main.groovy: 9: [Static type checking] - Cannot return value of type
> java.lang.Object on method returning type A
> @ line 9, column 7.
> y
> ^
> 1 error
> {code}
> h2. Expected Behavior
> Compile successfully.
> h2. Affected Version
> I have also tested it with the compiler from Master (commit:
> 444f6a5e7f10b75d43d94e7bb4fe771ae384c321).
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