https://github.com/rvenutolo/compilestatic-compiler-config
Demo for a Groovy compiler bug
https://github.com/rvenutolo/compilestatic-compiler-config
Last synced: 3 months ago
JSON representation
Demo for a Groovy compiler bug
- Host: GitHub
- URL: https://github.com/rvenutolo/compilestatic-compiler-config
- Owner: rvenutolo
- Created: 2016-06-07T23:47:31.000Z (about 9 years ago)
- Default Branch: master
- Last Pushed: 2016-06-09T14:01:15.000Z (about 9 years ago)
- Last Synced: 2025-02-03T22:12:55.418Z (4 months ago)
- Language: Groovy
- Homepage: https://issues.apache.org/jira/browse/GROOVY-7856
- Size: 13.7 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
[GROOVY-7856](https://issues.apache.org/jira/browse/GROOVY-7856)
I have run into an issue when adding the `CompileStatic` AST transformation to a class via the Groovy compiler `configscript` argument.
### `Demo.groovy`
```groovy
class Demo {
void test() {
['a', 'b'].eachWithIndex {String s, int i -> println "$i: $s"}
}
}
```
### `config.groovy`
```groovy
import groovy.transform.CompileStatic
import org.codehaus.groovy.ast.ClassNode
withConfig(configuration) {
source(classValidator: {ClassNode classNode -> classNode.nameWithoutPackage == 'Demo'}) {
ast(CompileStatic)
}
}
```
### Compile using `--configscript`
```
$ groovyc --configscript config.groovy Demo.groovy
```
### Output (abbreviated)
```
>>> a serious error occurred: BUG! exception in phase 'instruction selection' in source unit 'Demo.groovy' unexpected NullpointerException
>>> stacktrace:
BUG! exception in phase 'instruction selection' in source unit 'Demo.groovy' unexpected NullpointerException
at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1058)
at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:591)
at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:569)
...
Caused by: java.lang.NullPointerException
at org.codehaus.groovy.control.ClassNodeResolver.tryAsLoaderClassOrScript(ClassNodeResolver.java:180)
at org.codehaus.groovy.control.ClassNodeResolver.findClassNode(ClassNodeResolver.java:170)
at org.codehaus.groovy.control.ClassNodeResolver.resolveName(ClassNodeResolver.java:126)
...
```
### Notes
* Groovy & JVM versions: `Groovy Version: 2.4.7 JVM: 1.8.0_92 Vendor: Oracle Corporation OS: Linux`
* Have tried Groovy versions going back to 2.4.3 and Oracle JVM 1.7.0_79
* Changing any of the following will result in no compilation error:
* Remove the `source(classValidator: ...){ }` code around `ast`, leaving `ast(CompileStatic)`, in the compiler config script
* Replace the `eachWithIndex` call in `Demo` with `each`
* Annotate `Demo` with `@CompileStatic` and compile without `--configscript`
* This repo contains a bit more thorough demo of the issue.
* You can do a Maven build with `$ mvn clean compile` and it will fail
* You can run `$ ./compile.sh` to compile three times
* Once with no `--configscript`, which succeeds
* Once with `--configscript` [applying `CompileStatic` to all classes](https://github.com/rvenutolo/compilestatic-compiler-config/blob/master/src/conf/alwaysApplyCompileStatic.groovy), which succeeds
* Once with `--configscript` [selectively applying `CompileStatic` to only one class](https://github.com/rvenutolo/compilestatic-compiler-config/blob/master/src/conf/selectivelyApplyCompileStatic.groovy), which fails
* There are three class
* [ConfigAddsCompileStatic](https://github.com/rvenutolo/compilestatic-compiler-config/blob/master/src/main/groovy/org/venutolo/compilestatic/ConfigAddsCompileStatic.groovy), which is not annotated with `CompileStatic`, and is the class I want to add `CompileStatic` to
* [HasCompileStatic](https://github.com/rvenutolo/compilestatic-compiler-config/blob/master/src/main/groovy/org/venutolo/compilestatic/HasCompileStatic.groovy), which is a class already annotated with `CompileStatic`
* [NoCompileStatic](https://github.com/rvenutolo/compilestatic-compiler-config/blob/master/src/main/groovy/org/venutolo/compilestatic/NoCompileStatic.groovy), which is not anotated with `CompileStatic`, nor do I want to add `CompileStatic` to it