[3.9] bpo-13097: ctypes: limit callback to 1024 arguments (GH-19914)#20453
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ctypes now raises an ArgumentError when a callback is invoked with more than 1024 arguments. The ctypes module allocates arguments on the stack in ctypes_callproc() using alloca(), which is problematic when large numbers of arguments are passed. Instead of a stack overflow, this commit raises an ArgumentError if more than 1024 parameters are passed. (cherry picked from commit 29a1384) Co-authored-by: Sean Gillespie <sean@swgillespie.me>
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@swgillespie and @vstinner: Status check is done, and it's a success ✅ . |
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@swgillespie and @vstinner: Status check is done, and it's a success ✅ . |
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@swgillespie and @vstinner: Status check is done, and it's a success ✅ . |
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ctypes now raises an ArgumentError when a callback
is invoked with more than 1024 arguments.
The ctypes module allocates arguments on the stack in
ctypes_callproc() using alloca(), which is problematic
when large numbers of arguments are passed. Instead
of a stack overflow, this commit raises an ArgumentError
if more than 1024 parameters are passed.
(cherry picked from commit 29a1384)
Co-authored-by: Sean Gillespie sean@swgillespie.me
https://bugs.python.org/issue13097