tree 844dd82ca54e012a0416a1abb959d9a7b396e4bc
parent f7bda5c5729a3cc69b32c2a3baf5c64dea666d33
author Romain Picard <romain.picard@oakbits.com> 1557255504 +0200
committer Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> 1557255504 -0700

bpo-35125: remove inner callback on outer cancellation in asyncio shield (GH-10340)


When the future returned by shield is cancelled, its completion callback of the
inner future is not removed. This makes the callback list of inner inner future
grow each time a shield is created and cancelled.

This change unregisters the callback from the inner future when the outer
future is cancelled.


https://bugs.python.org/issue35125