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100% CPU spin in asyncio _deliver_cancellation due to missing task.done() check

bugSomething isn't workingSomething isn't working

Status: Open.

#1111 In agronholm/anyio;

· kkpattern opened on Apr 9, 2026

CancelledError leaks from connect_tcp happy eyeballs on Python 3.14

bugSomething isn't workingSomething isn't working

Status: Open.

#1094 In agronholm/anyio;

· fgeracitano opened on Mar 19, 2026

ByteReceiveStream.receive(max_bytes < 1) behaves differently between backends (and between stream types)

bugSomething isn't workingSomething isn't working

Status: Open.

#1081 In agronholm/anyio;

· gschaffner opened on Mar 3, 2026

TaskGroup doesn't raise cancelled when it should on asyncio

bugSomething isn't workingSomething isn't working

Status: Open.

#1070 In agronholm/anyio;

· gschaffner opened on Feb 13, 2026

TaskGroup.__aexit__ visits a cancel point on asyncio

bugSomething isn't workingSomething isn't working

Status: Open.

#1069 In agronholm/anyio;

· gschaffner opened on Feb 13, 2026

Pytest resumes after KeyboardInterrupt when using async fixture on asyncio backend

bugSomething isn't workingSomething isn't working

Status: Open.

#1060 In agronholm/anyio;

· watsonto-te opened on Jan 20, 2026

Passing a custom clock to the executor in tests

enhancementNew feature or requestNew feature or request

Status: Open.

#1047 In agronholm/anyio;

· fjarri opened on Dec 8, 2025

to_process.run_sync fails to set up __main__ in worker process when run from an entry point

bugSomething isn't workingSomething isn't working

Status: Open.

#1027 In agronholm/anyio;

· ilia-kats opened on Nov 11, 2025

Use uvloop.run() instead of uvloop.install()

enhancementNew feature or requestNew feature or request

Status: Open.

#1024 In agronholm/anyio;

· zhcn000000 opened on Nov 5, 2025

test_raise_baseexception_from_task occasionally deadlocks

bugSomething isn't workingSomething isn't working

Status: Open.

#1014 In agronholm/anyio;

· gschaffner opened on Oct 26, 2025

Cancelling a Future from BlockingPortal.start_task(_soon)? doesn't cancel the async function if portal.stop() has been called

bugSomething isn't workingSomething isn't working

Status: Open.

#1013 In agronholm/anyio;

· gschaffner opened on Oct 25, 2025

Add an asynchronous itertools implementation

enhancementNew feature or requestNew feature or request

Status: Open.

#998 In agronholm/anyio;

· agronholm opened on Oct 8, 2025