Bug report

Bug description:

In _contextvars.Context.run, call_result is not Py_DECREF'd if _PyContext_Exit fails. See here.

CPython versions tested on:

3.11

Operating systems tested on:

Linux

Linked PRs

• gh-120811: Fix reference leak upon _PyContext_Exit failure #120812
• [3.13] gh-120811: Fix reference leak upon _PyContext_Exit failure (GH-120812) #120843
• [3.12] gh-120811: Fix reference leak upon _PyContext_Exit failure (GH-120812) #120844