Octavia Togami created GROOVY-12226:
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Summary: Double-nested non-static class in trait calling outer
method compiles, but fails at runtime
Key: GROOVY-12226
URL: https://issues.apache.org/jira/browse/GROOVY-12226
Project: Groovy
Issue Type: Bug
Components: Compiler
Affects Versions: 5.0.8
Reporter: Octavia Togami
The following code works in 4.0.33, but fails in 5.0.8:
{code:groovy}
trait T {
static class Outer {
def outerMethod() { 'p' }
class Inner { def callOuter() { outerMethod() } }
def viaInner() { new Inner().callOuter() }
}
}
assert new T.Outer().viaInner() == 'p'
{code}
The failure is:
{code:sh}
java.lang.NoSuchMethodError: 'java.lang.Object
T$Outer.this$dist$invoke$1(java.lang.String, java.lang.Object)'
at T$Outer$Inner.methodMissing(v6_named.groovy)
at T$Outer$Inner.callOuter(v6_named.groovy:4)
{code}
This is because the compiler tries to generate a call to
{{T$Outer.this$dist$invoke$1}} in {{callOuter}}, but does not generate that
method in {{T$Outer}}, unlike Groovy 4. It should either produce a proper
compiler error, or generate the bridge method.
This was reduced from real code in Gradle:
https://github.com/gradle/gradle/blob/2e04b0a02ba788075b2be3614f9fc0562ecfaf9d/platforms/native/language-native/src/testFixtures/groovy/org/gradle/language/LanguageTaskNames.groovy#L121
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