[issue35504] `del OSError().characters_written` raises `SystemError`

[miss-islington]

miss-islington <mariatta.wijaya+miss-islington at gmail.com> added the comment:


New changeset cb272843f2d5dfc4ef996ba952b99a3e30c88bbc by Miss Islington (bot) in branch '3.7':
bpo-35504: Fix segfaults and SystemErrors when deleting certain attrs. (GH-11175)
https://github.com/python/cpython/commit/cb272843f2d5dfc4ef996ba952b99a3e30c88bbc


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nosy: +miss-islington

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