Michael Vornovitsky
6db91dfefb
extmod/modbtree: Add checks for already-closed database.
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Fixes use-after-free when accessing the database after it is closed with
`btree_close`. `btree_close` always succeeds when called with an
already-closed database.
The new test checks that operations that access the underlying database
(get, set, flush, seq) fail with a `ValueError` when the btree is already
closed. It also checks that closing and printing the btree succeed when
the btree is already closed.
Fixes issue #12543 .
Signed-off-by: Michael Vornovitsky <michaelvornovitskiy@outlook.com >
2024-07-22 10:42:29 +10:00
