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Revision 193366e25c4f84a58d2f6c6c577fd9f0143dc6e1 authored by Pablo Galindo on 11 October 2019, 20:28:49 UTC, committed by Miss Islington (bot) on 11 October 2019, 20:28:49 UTC
The implementation of weakref.proxy's methods call back into the Python API using a borrowed references of the weakly referenced object (acquired via PyWeakref_GET_OBJECT). This API call may delete the last reference to the object (either directly or via GC), leaving a dangling pointer, which can be subsequently dereferenced. To fix this, claim a temporary ownership of the referenced object when calling the appropriate method. Some functions because at the moment they do not need to access the borrowed referent, but to protect against future changes to these functions, ownership need to be fixed in all potentially affected methods.. (cherry picked from commit 10cd00a9e3c22af37c748ea5a417f6fb66601e21) Co-authored-by: Pablo Galindo <Pablogsal@gmail.com> https://bugs.python.org/issue38395
1 parent 1845997
Tip revision: 193366e25c4f84a58d2f6c6c577fd9f0143dc6e1 authored by Pablo Galindo on 11 October 2019, 20:28:49 UTC
[3.7] bpo-38395: Fix ownership in weakref.proxy methods (GH-16632) (GH-16663)
[3.7] bpo-38395: Fix ownership in weakref.proxy methods (GH-16632) (GH-16663)
Tip revision: 193366e
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