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From MG <>
Subject groovy-3.0.7 & groovy-2.5.14 IntelliJ build => Groovyc: Internal groovyc error: code 1 ?
Date Mon, 01 Mar 2021 17:41:13 GMT

I tried to do a spike to switch the (large) IntelliJ build-based* Groovy 
project I am working on to from Groovy 2.5.10 to the current Groovy 3 
release (3.0.7) today, but immediately got a "Groovyc: Internal groovyc 
error: code 1" that (contrary to previous times I encountered that 
error) did not go away through a rebuild of the current module or the 
whole project.

The same problem then occurred with the current Groovy 2.5 release (2.5.14).

I have now created a minimal IntelliJ Groovy project, that contains a 
single test that outputs the Groovy version - and to my surprise this 
still gives "Groovyc: Internal groovyc error: code 1" in the 'Builder 
"Groovy stub generator" requested rebuild of module chunk 
"GroovyMinimal"' phase...
The minimal project builds & runs without problems when switching back 
to Groovy 2.5.10.

My complete build environment is:
IntellliJ 2020.2.3
AdoptOpenJDK jdk- (same behavior when using
Windows 10 Pro 64-bit (build 19041.804)
Groovy 2.5.10 (works) / 2.5.14 (fails) / 3.0.7 (fails) respectively
(Hardware: Intel i5 CPU, 32GB RAM, 2TB SSD)

The project consists only of the (non-global) respective Groovy library 
dependency, and the following Groovy test file (for simplicity I use the 
JUnit that comes with this particular IntelliJ version in the minimal 

package minimal.groovy

import org.junit.Ignore import org.junit.Test class MinimalTest {
  @Test @Ignore void test() {
   println"Grooovy: ${GroovySystem.version}" }

Is this a known problem ? If not, feedback from other Groovy users would 
be appreciated. I am evidently trying to find a solution to this 
problem, but also to discern the extent of it: E.g. does it also occur 
when using Maven or Gradle as a build system (which would surprise me, 
since that is what most people use) ? If your build works fine with 
Groovy 2.5.14 / 3.0.7, what is your build environment ?

Thanks, cheers,

*Since the question typically pops up: The environment I work in does 
not allow access to build repositories on the internet, and it is not 
possible to automatically mirror repositories locally, and we have no 
complicated build steps, so using Gradle (or Maven) would have no real 
advantage for us, so we use the build system that is best integrated 
with our IDE and has good (apart from some minor hickups) minimal 
rebuild support, etc, i.e. an IntelliJ build.

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