Cody Maloney db68bfc771
gh-138720: Make Buffered closed check match flush (GH-138724)
In `_io__Buffered_flush_impl` the macro `CHECK_CLOSED` is used to check
the `buffered*` is in a good state to be flushed. That differs slightly
from `buffered_closed`.

In some cases, that difference would result in `close()` thinking the
file needed to be flushed and closed while `flush()` thought the file
was already closed.

This could happen during GC and would result in an unraisable exception.
2025-09-18 12:02:29 +02:00
..
2025-09-16 18:33:39 +05:30

Source files for standard library extension modules,
and former extension modules that are now builtin modules.