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python / mypy Public

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Prevent cache load race condition#20205

Open

sterliakov wants to merge 4 commits intopython:masterpython/mypy:masterfrom

sterliakov:bugfix/cache-racesterliakov/mypy:bugfix/cache-raceCopy head branch name to clipboard

Conversation Commits4 (4)Checks Files changed

Open

Prevent cache load race condition#20205
sterliakov wants to merge 4 commits intopython:masterfrom
sterliakov:bugfix/cache-race

Commits

Commits on Nov 7, 2025

Reject cached files with incompatible mtimes. The crash can be consistently reproduced by adding `__import__("time").sleep(0.2)` to `State.load_tree`
sterliakov
committed
We can skip premature mtime check
sterliakov
committed
Type fix
sterliakov
committed
Add try/except around mtime reading
sterliakov
committed

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