diff options
Diffstat (limited to 'Doc/howto')
| -rw-r--r-- | Doc/howto/free-threading-extensions.rst | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Doc/howto/free-threading-extensions.rst b/Doc/howto/free-threading-extensions.rst index c1ad42e..95f2141 100644 --- a/Doc/howto/free-threading-extensions.rst +++ b/Doc/howto/free-threading-extensions.rst @@ -96,8 +96,10 @@ Most of the C API is thread-safe, but there are some exceptions. * **Struct Fields**: Accessing fields in Python C API objects or structs directly is not thread-safe if the field may be concurrently modified. -* **Macros**: Accessor macros like :c:macro:`PyList_GET_ITEM` and - :c:macro:`PyList_SET_ITEM` do not perform any error checking or locking. +* **Macros**: Accessor macros like :c:macro:`PyList_GET_ITEM`, + :c:macro:`PyList_SET_ITEM`, and macros like + :c:macro:`PySequence_Fast_GET_SIZE` that use the object returned by + :c:func:`PySequence_Fast` do not perform any error checking or locking. These macros are not thread-safe if the container object may be modified concurrently. * **Borrowed References**: C API functions that return |