gh-143005: prevent incompatible __class__ reassignment for ctypes arrays #143907
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This PR fixes a memory safety issue in ctypes arrays for invalid behavior. |
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This PR fixes a heap buffer overflow in ctypes arrays caused by assigning
class to an incompatible array type.
The change rejects class reassignment when the new array type differs
in length, size, or element type, preventing out-of-bounds memory access.
A regression test is included.
__class__swap #143005