[Eclipse 2025-12 regression]: Type inference issue in Collectors.toMap method within Collectors.partitioningBy method #4716
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method within Collectors.partitioningBy method heuristically include / exclude capture bounds during copy Fixes eclipse-jdt#4715
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This touches an area that may require a significant revamp as of #4635 (which involves fixing a blatant bug in ecj while at the same time compensating for insufficient specification). For the current bug it would suffice to simply remove one line from #4520, but (incomplete) experiments in #4635 indicate that selectively including captured bounds on some call paths while excluding them in other situations gives better results. |
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Behavior change is due to the fix #4520.
Fixed by heuristically including / excluding capture bounds during copy
Fixes #4715