diff options
Diffstat (limited to 'Doc/whatsnew/3.8.rst')
| -rw-r--r-- | Doc/whatsnew/3.8.rst | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.8.rst b/Doc/whatsnew/3.8.rst index 0ffbcab..f0423c3 100644 --- a/Doc/whatsnew/3.8.rst +++ b/Doc/whatsnew/3.8.rst @@ -168,6 +168,16 @@ asyncio On Windows, the default event loop is now :class:`~asyncio.ProactorEventLoop`. +ctypes +------ + +On Windows, :class:`~ctypes.CDLL` and subclasses now accept a *winmode* parameter +to specify flags for the underlying ``LoadLibraryEx`` call. The default flags are +set to only load DLL dependencies from trusted locations, including the path +where the DLL is stored (if a full or partial path is used to load the initial +DLL) and paths added by :func:`~os.add_dll_directory`. + + gettext ------- @@ -238,6 +248,13 @@ Added new function, :func:`math.prod`, as analogous function to :func:`sum` that returns the product of a 'start' value (default: 1) times an iterable of numbers. (Contributed by Pablo Galindo in :issue:`35606`) +os +-- + +Added new function :func:`~os.add_dll_directory` on Windows for providing +additional search paths for native dependencies when importing extension +modules or loading DLLs using :mod:`ctypes`. + os.path ------- @@ -727,6 +744,19 @@ Changes in the Python API environment variable and does not use :envvar:`HOME`, which is not normally set for regular user accounts. +.. _bpo-36085-whatsnew: + +* DLL dependencies for extension modules and DLLs loaded with :mod:`ctypes` on + Windows are now resolved more securely. Only the system paths, the directory + containing the DLL or PYD file, and directories added with + :func:`~os.add_dll_directory` are searched for load-time dependencies. + Specifically, :envvar:`PATH` and the current working directory are no longer + used, and modifications to these will no longer have any effect on normal DLL + resolution. If your application relies on these mechanisms, you should check + for :func:`~os.add_dll_directory` and if it exists, use it to add your DLLs + directory while loading your library. + (See :issue:`36085`.) + Changes in the C API -------------------- |