Eric Milles created GROOVY-11480:
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Summary: Cast exception when using qualified this in lambda
Key: GROOVY-11480
URL: https://issues.apache.org/jira/browse/GROOVY-11480
Project: Groovy
Issue Type: Bug
Components: Static compilation
Reporter: Eric Milles
Assignee: Eric Milles
Consider the following:
{code:groovy}
@groovy.transform.CompileStatic
class Test1 {
class Test2 {
def m() {
Optional.empty().orElseGet(() -> Test1.this.n)
}
}
private n = 123
}
assert new Test1.Test2(new Test1()).m() == 123
{code}
The expression "Test1.this.n" is not detected as an instance member access.
Thus the thisObject reference for the lambda class is set to {{Class<Test2>}}
and this results in a cast exception at runtime.
{code}
java.lang.ClassCastException: class java.lang.Class cannot be cast to class
Test1$Test2 (java.lang.Class is in module java.base of loader 'bootstrap';
Test1$Test2 is in unnamed module of loader
groovy.lang.GroovyClassLoader$InnerLoader @7ec68821)
at Test1$Test2$_m_lambda1.doCall(TestScript85.groovy:5)
at java.base/java.util.Optional.orElseGet(Optional.java:364)
at Test1$Test2.m(TestScript85.groovy:5)
{code}
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