Dominik Przybysz created GROOVY-8281:
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Summary: Final field is null in trait, but it has value
Key: GROOVY-8281
URL: https://issues.apache.org/jira/browse/GROOVY-8281
Project: Groovy
Issue Type: Bug
Affects Versions: 2.4.12, 2.4.11, 2.4.10, 2.4.9, 2.4.8
Reporter: Dominik Przybysz
I have a code like this:
{code}
trait MyTrait {
final String myValue = "test"
final Wrapper wrapper = new Wrapper(myValue)
}
class Wrapper {
Wrapper(String value){
if(value == null) {
throw new Exception("Value is null!!!")
}
println "OK: $value"
}
}
class Main implements MyTrait {}
new Main()
{code}
Everything works as expected with groovy 2.4.7:
{code}
$ sdk u groovy 2.4.7
Using groovy version 2.4.7 in this shell.
$ groovy bug.groovy
OK: test
{code}
but newer versions of groovy do not compile this code (2.4.8, 2.4.9, 2.4.10) or
have null to value (2.4.11, 2.4.12):
{code}
$ sdk u groovy 2.4.8
Using groovy version 2.4.8 in this shell.
$ groovy bug.groovy
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
~/bug.groovy: 3: Apparent variable 'myValue' was found in a static scope but
doesn't refer to a local variable, static field or class. Possible causes:
You attempted to reference a variable in the binding or an instance variable
from a static context.
You misspelled a classname or statically imported field. Please check the
spelling.
You attempted to use a method 'myValue' but left out brackets in a place not
allowed by the grammar.
@ line 3, column 38.
final Wrapper wrapper = new Wrapper(myValue)
^
1 error
$ sdk u groovy 2.4.9
Using groovy version 2.4.9 in this shell.
$ groovy bug.groovy
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
~/bug.groovy: 3: Apparent variable 'myValue' was found in a static scope but
doesn't refer to a local variable, static field or class. Possible causes:
You attempted to reference a variable in the binding or an instance variable
from a static context.
You misspelled a classname or statically imported field. Please check the
spelling.
You attempted to use a method 'myValue' but left out brackets in a place not
allowed by the grammar.
@ line 3, column 38.
final Wrapper wrapper = new Wrapper(myValue)
^
~/bug.groovy: 3: Apparent variable 'myValue' was found in a static scope but
doesn't refer to a local variable, static field or class. Possible causes:
You attempted to reference a variable in the binding or an instance variable
from a static context.
You misspelled a classname or statically imported field. Please check the
spelling.
You attempted to use a method 'myValue' but left out brackets in a place not
allowed by the grammar.
@ line 3, column 38.
final Wrapper wrapper = new Wrapper(myValue)
^
2 errors
$ sdk u groovy 2.4.10
Using groovy version 2.4.10 in this shell.
$ groovy bug.groovy
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
~/bug.groovy: 3: Apparent variable 'myValue' was found in a static scope but
doesn't refer to a local variable, static field or class. Possible causes:
You attempted to reference a variable in the binding or an instance variable
from a static context.
You misspelled a classname or statically imported field. Please check the
spelling.
You attempted to use a method 'myValue' but left out brackets in a place not
allowed by the grammar.
@ line 3, column 38.
final Wrapper wrapper = new Wrapper(myValue)
^
~/bug.groovy: 3: Apparent variable 'myValue' was found in a static scope but
doesn't refer to a local variable, static field or class. Possible causes:
You attempted to reference a variable in the binding or an instance variable
from a static context.
You misspelled a classname or statically imported field. Please check the
spelling.
You attempted to use a method 'myValue' but left out brackets in a place not
allowed by the grammar.
@ line 3, column 38.
final Wrapper wrapper = new Wrapper(myValue)
^
2 errors
$ sdk u groovy 2.4.11
Using groovy version 2.4.11 in this shell.
$ groovy bug.groovy
Caught: java.lang.Exception: Value is null!!!
java.lang.Exception: Value is null!!!
at Wrapper.<init>(bug.groovy:9)
at MyTrait$Trait$Helper.$init$(bug.groovy:3)
at Main.<init>(bug.groovy)
at bug.run(bug.groovy:17)
$ sdk u groovy 2.4.12
Using groovy version 2.4.12 in this shell.
$ groovy bug.groovy
Caught: java.lang.Exception: Value is null!!!
java.lang.Exception: Value is null!!!
at Wrapper.<init>(bug.groovy:9)
at MyTrait$Trait$Helper.$init$(bug.groovy:3)
at Main.<init>(bug.groovy)
at bug.run(bug.groovy:17)
{code}
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