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https://issues.apache.org/jira/browse/GROOVY-10657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18138802#comment-18138802
]
ASF GitHub Bot commented on GROOVY-10657:
-----------------------------------------
codecov-commenter commented on PR #3226:
URL: https://github.com/apache/groovy/pull/3226#issuecomment-6660002999
##
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Report
:x: Patch coverage is `78.37838%` with `8 lines` in your changes missing
coverage. Please review.
:white_check_mark: Project coverage is 74.1728%. Comparing base
([`ee802a1`](https://app.codecov.io/gh/apache/groovy/commit/ee802a1814eae7a50016cf6ad2896ff9e80f6665?dropdown=coverage&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache))
to head
([`932c2f7`](https://app.codecov.io/gh/apache/groovy/commit/932c2f73b73453f7969ce31dc5978b548568e86e?dropdown=coverage&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache)).
| [Files with missing
lines](https://app.codecov.io/gh/apache/groovy/pull/3226?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache)
| Patch % | Lines |
|---|---|---|
|
[...us/groovy/classgen/asm/BinaryExpressionHelper.java](https://app.codecov.io/gh/apache/groovy/pull/3226?src=pr&el=tree&filepath=src%2Fmain%2Fjava%2Forg%2Fcodehaus%2Fgroovy%2Fclassgen%2Fasm%2FBinaryExpressionHelper.java&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache#diff-c3JjL21haW4vamF2YS9vcmcvY29kZWhhdXMvZ3Jvb3Z5L2NsYXNzZ2VuL2FzbS9CaW5hcnlFeHByZXNzaW9uSGVscGVyLmphdmE=)
| 78.3784% | [4 Missing and 4 partials :warning:
](https://app.codecov.io/gh/apache/groovy/pull/3226?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache)
|
<details><summary>Additional details and impacted files</summary>
[](https://app.codecov.io/gh/apache/groovy/pull/3226?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache)
```diff
@@ Coverage Diff @@
## master #3226 +/- ##
==================================================
+ Coverage 74.1723% 74.1728% +0.0005%
- Complexity 43760 43769 +9
==================================================
Files 1692 1692
Lines 149599 149629 +30
Branches 28386 28389 +3
==================================================
+ Hits 110961 110984 +23
- Misses 28430 28437 +7
Partials 10208 10208
```
| [Files with missing
lines](https://app.codecov.io/gh/apache/groovy/pull/3226?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache)
| Coverage Δ | |
|---|---|---|
|
[...us/groovy/classgen/asm/BinaryExpressionHelper.java](https://app.codecov.io/gh/apache/groovy/pull/3226?src=pr&el=tree&filepath=src%2Fmain%2Fjava%2Forg%2Fcodehaus%2Fgroovy%2Fclassgen%2Fasm%2FBinaryExpressionHelper.java&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache#diff-c3JjL21haW4vamF2YS9vcmcvY29kZWhhdXMvZ3Jvb3Z5L2NsYXNzZ2VuL2FzbS9CaW5hcnlFeHByZXNzaW9uSGVscGVyLmphdmE=)
| `88.8344% <78.3784%> (-0.8472%)` | :arrow_down: |
... and [10 files with indirect coverage
changes](https://app.codecov.io/gh/apache/groovy/pull/3226/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache)
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</details>
> Generated code for overloaded assignment operator prevents garbage collection
> -----------------------------------------------------------------------------
>
> Key: GROOVY-10657
> URL: https://issues.apache.org/jira/browse/GROOVY-10657
> Project: Groovy
> Issue Type: Bug
> Components: Compiler
> Affects Versions: 4.0.3
> Reporter: Jonathan Baxter
> Priority: Major
>
> The groovy code
> {code:java}
> obj["lhs"] = "rhs"{code}
> ostensibly converts to
> {code:java}
> obj.putAt("lhs","rhs")
> {code}
> if {{obj}} has the appropriate {{putAt}} method.
> However , in the process of tracking down a memory leak, I discovered that
> assignment is not exactly equivalent to invocation of the {{putAt}} method.
> Specifically, the code generated by the compiler is equivalent to creating an
> additional temporary variable to hold the rhs of the assignment, and then
> invoking the {{putAt}} method with that temporary variable as its second
> argument:
> {code:java}
> String string = "rhs"
> obj.putAt("lhs",string){code}
> The problem with this is that since {{"rhs"}} now has a live reference
> ({{{}string{}}}), it is not eligible for garbage collection.
> In my particular use case, {{"rhs"}} is a very large object that I would like
> to be automatically garbage collected after the assignment is executed, but
> before the script has finished. But that means I have to use the underlying
> {{putAt}} method rather than the assignment operator, which rather negates
> the benefits of overloading the assignment operator.
> One potential fix would be to simply null out any temporary variables
> constructed by the compiler, so that
> {code:java}
> obj["lhs"] = "rhs"
> {code}
> becomes
> {code:java}
> String string = "rhs"
> obj.putAt("lhs",string)
> string = null <----- "rhs" is now eligible for garbage-collection{code}
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