gh-158600: Fix a race condition in concurrent set.intersection_update() - #158673

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CaQtiml wants to merge 5 commits into

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CaQtiml:intersection-update-concurrency

Commits on Oct 5, 2026

gh-158600: Fix lost updates in concurrent set.intersection_update()
CaQtiml
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a7f8332
📜🤖 Added by blurb_it.

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CaQtiml
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a644af9
gh-158600: Avoid copying in set.intersection_update()
CaQtiml
committed
19264ba
gh-158600: Preserve concurrent removals for several operands in set.intersection_update()
CaQtiml
committed
0e11b6f
add a test to test several operands on 4 threads
CaQtiml
committed
2c1bb2a