Github user danielsun1106 commented on a diff in the pull request:
https://github.com/apache/groovy/pull/835#discussion_r238350588
--- Diff: subprojects/parser-antlr4/build.gradle ---
@@ -30,9 +30,11 @@ def srcBase = "subprojects/parser-antlr4/src"
def srcMain = "$srcBase/main"
def srcTest = "$srcBase/test"
-final PARSER_PACKAGE_NAME = 'org.apache.groovy.parser.antlr4'
generateGrammarSource {
+ maxHeapSize = '1g'
--- End diff --
https://travis-ci.org/danielsun1106/groovy/jobs/460259483
```
> Task :generateGrammarSource FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':generateGrammarSource'.
> Java heap space
```
Groovy's grammar is quite complicated, so more memory will be consumed. As
you can see, the `generateGrammarSource` task fails if the heap size is a bit
small, e.g. `512m`. Also, you can try to clone apache/groovy and set the heap
size to `maxHeapSize = '512m'` then run `gradlew clean generateGrammarSource
--no-build-cache` locally, I believe OOM can be reproduced.
---
