GROOVY-11022: StackOverflowError when having parameterized function w…

[paulk-asert]

…ith recursive bounds

This is the fix recommended for master

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.1396%. Comparing base (5a41b8f) to head (2adae3b).
⚠️ Report is 8 commits behind head on master.

Additional details and impacted files

@@                Coverage Diff                 @@
##               master      #2497        +/-   ##
==================================================
+ Coverage     67.1374%   67.1396%   +0.0021%     
- Complexity      31622      31634        +12     
==================================================
  Files            1451       1451                
  Lines          122565     122582        +17     
  Branches        22007      22010         +3     
==================================================
+ Hits            82287      82301        +14     
- Misses          33199      33200         +1     
- Partials         7079       7081         +2     

Files with missing lines	Coverage Δ
...roovy/transform/stc/StaticTypeCheckingSupport.java	81.8103% <100.0000%> (+0.2732%)	⬆️

... and 6 files with indirect coverage changes

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[Copilot]

Pull request overview

Fixes GROOVY-11022 by preventing StackOverflowError during static type checking when expanding recursive (F-bounded) generic type parameter bounds that self-reference through wildcard bounds.

Changes:

• Added regression tests covering recursive bounds involving ? super and ? extends wildcards.
• Introduced a bound-expansion tracking context in StaticTypeCheckingSupport.applyGenericsContext to break cycles during placeholder bound expansion.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
src/test/groovy/groovy/transform/stc/GenericsSTCTest.groovy	Adds a new regression test (testNoStackOverflow3) for recursive generic bounds cases.
src/main/java/org/codehaus/groovy/transform/stc/StaticTypeCheckingSupport.java	Adds BoundExpansionContext and threads it through applyGenericsContext to avoid infinite recursion when expanding F-bounded placeholder bounds.