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https://issues.apache.org/jira/browse/GROOVY-9967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Eric Milles reassigned GROOVY-9967:
-----------------------------------
Assignee: Eric Milles
> STC: Access to field/property is forbidden after instanceof.
> ------------------------------------------------------------
>
> Key: GROOVY-9967
> URL: https://issues.apache.org/jira/browse/GROOVY-9967
> Project: Groovy
> Issue Type: Bug
> Components: Static compilation, Static Type Checker
> Affects Versions: 4.0.0-alpha-2
> Reporter: Stefanos Chaliasos
> Assignee: Eric Milles
> Priority: Major
>
> I have the following Groovy program.
> {code:groovy}
> class Test {
> static void main(String[] args) {
> println(C.func4(new B()))
> }
> }
> class A {}
> class B extends A {
> // It has the same behavior if f is a field instead of a property.
> String f = "foo"
> }
> @groovy.transform.CompileStatic
> class C {
> static String func1(Object x) {
> (x instanceof String) ? x : "foo" // Compiles
> }
> static String func2(B x) {
> x.f // Compiles
> }
> static String func3(B x) {
> (x instanceof B) ? x.f : "foo" // Compiles
> }
> static String func4(A x) {
> (x instanceof B) ? x.f : "foo" // Does not compile
> }
> }
> {code}
> h2. Actual Behavior
> The program does not compile, and I get the following error.
> {code:java}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
> failed:
> Test.groovy: 28: Access to A#f is forbidden @ line 28, column 24.
> (x instanceof B) ? x.f : "foo"
> ^
> 1 error
> {code}
> h2. Expected Behavior
> Compile successfully.
> h2. Comment
> This should be a regression bug because it compiles with the 3.0.7 compiler.
> If we declared classes A and B after C, then the program compiles
> successfully.
> Specifically, the following program compiles without any errors.
> {code:groovy}
> class Test {
> static void main(String[] args) {
> println(C.func4(new B()))
> }
> }
> @groovy.transform.CompileStatic
> class C {
> static String func1(Object x) {
> (x instanceof String) ? x : "foo"
> }
> static String func2(B x) {
> x.f
> }
> static String func3(B x) {
> (x instanceof B) ? x.f : "foo"
> }
> static String func4(A x) {
> (x instanceof B) ? x.f : "foo"
> }
> }
> class A {}
> class B extends A {
> String f = "foo"
> }
> {code}
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